The resulting cationic zirconocene species is stabilised by the non coordinating borane anion. The exposed site on the ... the remaining carbon-methyl ligand gives rise to a propyl ligand this process continues resulting in the growth of a polymer ...

In 2020 researchers have combined cationic polymer adsorption and femtosecond laser surface structuring to generate a ... and cationic surfactants, such as 0.05 - 0.5% benzalkonium, 0.5 - 4% chlorhexidine, 0.1 - 2% octenidine solutions. Others are ... cationic surfactants, such as some quaternary ammonium cations (such as benzalkonium chloride, cetyl trimethylammonium bromide ...

... a kind of polymer Liverpool Care Pathway for the Dying Patient, care guidance for dying hospital patients Living cationic ...

... polymer on polymer pollution removal) and note that it is highly effective at removing nanoplastic that has adhered to lenses. ... Amino-modified silicones are cationic and affinitive to hair keratin. They are particularly highly affinitive to damaged hair, ... The polymer is manufactured in multiple viscosities, from a thin pourable liquid (when n is very low), to a thick rubbery semi- ... But the process that is described above is only relevant when cross-linking is present; when it is not, the polymer PDMS cannot ...

Polymer. 100: 219-226. doi:10.1016/j.polymer.2016.08.039. ISSN 0032-3861. Dai, Jinyue; Ma, Songqi; Wu, Yonggang; Zhu, Jin; Liu ... An ion may be formed which can be an anion thus forming an anionic PUD or a cation may be formed forming a cationic PUD. Also, ... Journal of Polymer Science Part A: Polymer Chemistry. 56 (10): 1078-1090. doi:10.1002/pola.28986. ISSN 1099-0518. Subramani, S ... Polymer. 186. doi:10.1016/j.polymer.2019.122008. S2CID 210234416. Xu, Liangfeng (July 2021). "CO2 triggered hydrophobic/ ...

Polymer News, 17(3), 91-95 (1992) XIth Symposium on Cationic Polymerization and Related Ionic Processes, Polymer News, 19(6), ... Qian Renyuan, Polymer News, 22(6), 203-204 (1997) Yu Tongyin, Polymer News, 23(1),11-12 (1998) Feng Xinde, Polymer News, 23(2 ... 21, 27-34) (Polymer News, 1995. Vol.20, 364-370.) Polymer Science in Australia II. Brisbane and Queensland, Polymer News, 19(10 ... 314-319 (1994) Polymer Science in Australia I. Sydney and Canberra, Polymer News, 19(8), 249-255 (1994) Polymer Science in ...

Journal of Polymer Science Part A: Polymer Chemistry. 48 (7): 1485-1492. doi:10.1002/pola.23891. Brignou, Pierre; Guillaume, ... Sophie M.; Roisnel, Thierry; Bourissou, Didier; Carpentier, Jean-François (Jul 2012). "Discrete Cationic Zinc and Magnesium ... 3-trimethylene carbonate polymers and networks". Polymer. 44 (21): 6495-6504. doi:10.1016/S0032-3861(03)00668-2. Brossier, ... The polymer presents glass transition temperature ( T g {\displaystyle T_{g}} ) between -15 and -30 °C and melting temperature ...

... the end-to-end distance would scale as a square root of the polymer length. For real polymers such as DNA, this gives only a ... The second possibility can be realized by inducing attractive interactions between the DNA segments by multivalent cationic ... The former can be achieved e.g. with the help of the osmotic pressure exerted by crowding neutral polymers in the presence of ... DNA is one of the stiffest natural polymers, yet it is also one of the longest molecules. The persistence length of double- ...

"Self healing in polymers and polymer composites. Concepts, realization and outlook: A review". Express Polymer Letters. 2 (4): ... When a bond is cleaved heterolytically, cationic and anionic species are formed that can in turn recombine to repair damage, ... Thus at each polymer length an optimal reversible bonding energy exists. Vitrimers are a subset of polymers that bridge the gap ... This polymer, upon heating, breaks down to its original monomeric units via RDA reaction and then reforms the polymer upon ...

Alum, lime and/or polymers have been the chemical coagulants used. These processes, however, tend to generate large volumes of ... "Although the electrocoagulation mechanism resembles chemical coagulation in that the cationic species are responsible for the ... Electrocoagulation offers an alternative to the use of metal salts or polymers and polyelectrolyte addition for breaking stable ...

However, polymers can be processed in solution, and spin coating is a common method of depositing thin polymer films. This ... "Cationic Water-Soluble Conjugated Polyelectrolytes/Graphene Oxide Nanocomposites as Efficient Green Hole Injection Layers in ... Polymer light-emitting diodes (PLED, P-OLED), also light-emitting polymers (LEP), involve an electroluminescent conductive ... Compared to a non-etched polymer layer, the structured polymer layer in the OLED structure from the IJE process helps to ...

In general cationic surfactants are not used as most of them are not compatible with anionic surfactants and are not good ... these may themselves be surfactants or film-stabilizing polymers. Some surfactants used in foaming preparations may have a ... Main function of cationic surfactants is conditioning and are hence used more in personal care products such as shampoos and ...

... such as solutions of polymers and particles as well as photo-polymers. Self-focusing was observed in photo-polymer systems with ... "Spontaneous Emergence of Nonlinear Light Waves and Self-Inscribed Waveguide Microstructure during the Cationic Polymerization ... Askadskii, A.A (1990). "Influence of crosslinking density on the properties of polymer networks". Polymer Science U.S.S.R. 32 ( ... Biria, Saeid; Hosein, Ian D. (2017-05-09). "Control of Morphology in Polymer Blends through Light Self-Trapping: An in Situ ...

Degradation can occur on the polymers during the flow. Because of the pressure and temperature on the polymers, it is easier to ... All three classes of surfactants, namely, anionic, cationic and nonionic surfactants, have been successfully tried as drag- ... These agents are made out of high molecular weight polymers or micellar systems. The polymers help with drag reduction by ... When the polymer is added, it interacts with the oil and the wall to help reduce the contact of the oil with the wall. ...

Pişkin, E. (2002). "Biodegradable Polymers in Medicine". In Scott, Gerald (ed.). Degradable Polymers (2nd ed.). Kluwer Academic ... The pure substance is very reactive against the attack of electrophilic agents and ows a strong tendency for cationic ... Heller, J.; Himmelstein, K. J. (1985). Poly(ortho ester) biodegradable polymer systems. Methods in Enzymology. Vol. 112. pp. ... assigned to Advanced Polymer Systems, Inc. US 4532335, R.F. Helwing, "Preparation of ketene acetals by rearrangement of allyl ...

Okamura, S.; Kodama, T.; Higashimura, T. (1962). "The cationic polymerization of t-butyl vinyl ether at low temperature and the ... Sandler, Stanley R.; Karo, Wolf (2012-12-02). Polymer Syntheses. Elsevier. ISBN 9780080925554. Retrieved May 15, 2017. ... Journal of Polymer Science. 33 (126): 510-513. Bibcode:1958JPoSc..33..510O. doi:10.1002/pol.1958.1203312658. Zoss, A. O. (1947 ...

... and development of new surfactant/polymers. The physicochemical profiling of poorly soluble drug candidates performed using a ... complexes were correlated with high-throughput surface tension device to predict phospholipidosis in particular cationic drugs ... tension profiles of the branched copolymers solutions were performed using a HTS surface tensiometer as a function polymer ...

The most effective LNP to be found in vivo contains an ionizable cationic lipid 2,2-dilinoleyl-4-(2-dimethylaminoethyl)-[1,3]- ... The core consists of biodegradable poly isobutylcyanoacrylate polymer and a shell of chitosan. After intravenous injection of ...

It is used as a reagent to make the polymer rayon and many organosulfur compounds. Unlike carbon monoxide, carbon monosulfide ... Sulfonium ions have three groups attached to a cationic sulfur center. Dimethylsulfoniopropionate (DMSP) is one such compound, ... One of the uses of elemental sulfur is in vulcanization of rubber, where polysulfide chains crosslink organic polymers. Large ... Inorganic polymers, Native element minerals, Orthorhombic minerals, Minerals in space group 70, Pyrotechnic fuels, Chemical ...

It is used as a reagent to make the polymer rayon and many organosulfur compounds. Unlike carbon monoxide, carbon monosulfide ... Sulfonium ions have three groups attached to a cationic sulfur center. Dimethylsulfoniopropionate (DMSP) is one such compound, ... is heated with the rubber to the point that chemical reactions form disulfide bridges between isoprene units of the polymer. ...

... can be polymerized by cationic initiators such as (C2H5)3OSbCl6 to form a crystalline solid with a melting point around ... Takeo Saegusa; Toshiaki Shiota; Shu-ichi Matsumoto; Hiroyasu Fujii (1972). "Ring-opening Polymerization of Oxepane". Polymer ...

Because of the double bonds, these 4-carbon alkenes can act as monomers in the formation of polymers, as well as having other ... Butyl rubber is made by cationic polymerisation of isobutylene with about 2 - 7% isoprene. Isobutylene is also used for the ... Butene can be used as the monomer for polybutene, but this polymer is more expensive than alternatives with shorter carbon ...

Biria, Saeid; Hosein, Ian D. (2017-05-09). "Control of Morphology in Polymer Blends through Light Self-Trapping: An in Situ ... "Spontaneous Emergence of Nonlinear Light Waves and Self-Inscribed Waveguide Microstructure during the Cationic Polymerization ... and polymer blends. The locations of filament formation and propagation may be controlled by modulating the spatial profile of ... "Optical Autocatalysis Establishes Novel Spatial Dynamics in Phase Separation of Polymer Blends during Photocuring". ACS Macro ...

C is the polymer concentration, P is a protein-protein interaction coefficient, a is a protein-polymer interaction coefficient ... Cationic polyelectrolytes are at pH values above the pI. It is important to note that an excess of polyelectrolytes will cause ... These polymers in solution attract water molecules away from the solvation layer around the protein. This increases the protein ... Polymers, such as dextrans and polyethylene glycols, are frequently used to precipitate proteins because they have low ...

Although it is a polymer network (gel), the rings are not fixed on the polyrotaxanes in the polymer network, the crosslinks of ... In addition, if cationic or anionic units are employed to form the polyrotaxanes, the salts or pH in the solution also will ... In chemical gels, the polymer chains are easy to be broken because the lengths of the heterogeneous polymer are limited or ... 3) Polyrotor/polyaxis: polymers possess covalently bonded cyclic molecule-moieties assembled with polymers possess guested in ...

The polymers tend to be linear and not branched and have much higher molar mass. Coordination type polymers are also ... The active site is usually anionic but cationic coordination polymerization also exists. Many alkenes do not polymerize in the ... Coordination polymerization has a great impact on the physical properties of vinyl polymers such as polyethylene and ... I. (2002). "Palladium catalysed copolymerisation of ethene with alkylacrylates: polar comonomer built into the linear polymer ...

Radical cations figure prominently in the chemistry and properties of conducting polymers. Such polymers are formed by the ... Cationic radical species are much less common than the anions. Denoted M + ∙ {\displaystyle M^{+\bullet }} , they appear ... Polarons and bipolarons are radical cations encountered in doped conducting polymers. IUPAC, Compendium of Chemical Terminology ... "Polypyrrole: a conducting polymer; its synthesis, properties and applications" Russ. Chem. Rev. 1997, vol. 66, p.443ff.(http:// ...

D-galacturonic acid polymer) resulting in a de-esterified pectin polymer. WAKs bind more readily to de-esterified pectins due ... was shown in a mutation in cationic residues in a WAK1 gene to neutral residues which resulted to the loss of binding ... Kohorn (2016) suggested that "pectin polymers can be cross-linked in the cell wall with Ca+, and WAKs bind these pectins and ... However, since WAKs are also required for cell growth by binding to long pectin polymers for plant development and also pectin ...

Suter, J.; Groen, D.; Coveney, P. V. (2015). "Mechanism of exfoliation and prediction of materials properties of clay-polymer ... Among these was the study of two-dimensional nanomaterials, including cationic and anionic clays and their interactions with ... This subsequently evolved to the study of nanocomposite materials consisting of 2d nanoparticles embedded in polymer matrices ... Suter, J.; Groen, D.; Coveney, P. V. (2015). "Chemically specific multiscale modeling of clay-polymer nanocomposites reveals ...

Hydrogels are three dimensional structures consisting of hydrophilic polymers (i.e., polymers, colloids, etc.) that form ... demonstrated that cationic gels swell in acidic environments but remain condensed in basic environments. Since traditional ... Examples of natural polymers include alginate, chitosan, cellulose, gelatin, fibrin, and collagen. Hydrogel size and type are ... doi:10.1016/j.polymer.2008.01.027. Bordbar-Khiabani, Aydin; Gasik, Michael (2022-03-27). "Smart Hydrogels for Advanced Drug ...

Rudolf Faust, et al., "Silyl-functional living cationic polymers", US Patent 6,051,657 (2000) (Articles without EBI source, ...

US patent 4001032, "Method of Making Nongelling Aqueous Cationic Dialdehyde Starch Compositions" v t e (Chemicals that do not ... Carbohydrate Polymers. 79 (2): 296. doi:10.1016/j.carbpol.2009.08.005. ...

Chitosan is a polymer obtained from chitin in arthropod shells, and has been used for its antibacterial properties for a while ... This is due to their structure which consists of a hydrophobic element, and a cationic element. While the hydrophobic element ... Assembly thickness and polymer-peptide interactions can affect the diffusion of peptide to bacterial contact. Further research ... In alternative, it is possible to functionalize a surface by adsorbing a polymer or polypeptide and/or by changing its micro ...

... synthesis of novel polymers, lipopeptides, lipopolymers and cationic lipids (iv) construction of plasmid and adenovirus-based ... Design of gene delivery systems: Developed polymer, lipid, lipopolymer and peptide-based systems to deliver and transfect ... Contributed extensively on polymeric micellar delivery using novel polymers and combination therapy for treating advanced ... Synthesis: synthesized water-soluble and insoluble lipopolymers, soluble steroidal peptides, cationic lipids, and conjugated ...

Cationic polymerization of ethylene oxide is assisted by protic acids (HClO4, HCl), Lewis acids (SnCl4, BF3, etc.), ... n To suppress the formation of other linear polymers the reaction is carried out in a highly dilute solution. Reaction of ... One method is the cationic cyclopolymerization of ethylene oxide, limiting the size of the formed cycle: n (CH2CH2)O → (-CH2CH2 ...

Journal of Applied Polymer Science, 117 (2010), p. 1843 and M.D. Teli, Javed Sheikh, Antibacterial and acid and cationic ... dyeable bamboo cellulose (rayon) fabric on grafting, Carbohydrate Polymers, Volume 88, Issue 4, 16 May 2012, Pages 1281-1287 " ...

He authored several books on polymer chemistry and polymer materials and co-authored over 580 scientific articles. He was also ... A variety of polymeric ion exchange resins, including strongly and weakly cationic and anionic exchangers, were developed in ... He returned to China and became a professor in Nankai University in Tianjin, where he set up the Polymer Chemistry Division in ... In 1983, he became the founding director of the Institute of Polymer Chemistry at Nankai University. ...

This catalytic process is an important step in the production of polymers, and other fine chemicals. RC2H + CO + XH + Pd cat → ... Drent, E.; Arnoldy, P.; Budzelaar, P.H.M. (1994). "Homogeneous catalysis by cationic palladium complexes. Precision catalysis ... Doherty, S; Knight, J; Bentham, M. (2006). "The first insoluble polymer-bound palladium complexes of 2-pyridyldiphenylphosphine ... Carbonylation of alkynes by cationic Pd(II) catalyst with a diphenyl-2-pyridylphosphine ligand. Kluwer, Alexander M.; Ahmad, ...

... such as precipitated calcium carbonate or cationic polymers). Even small amounts and also inhomogeneous distribution are ... especially with cationic starch or cationic polyacrylamides (C-PAM) in the ratio ASA to cation of about 2: 1) and with about 1 ... tar-like polymer residues was unproblematic. However, for later use in cleaners and detergents, clear (meaning polymer-free) ... The formation of polymer can be reduced by the addition of antioxidants or polymerization inhibitors (for example hydroquinone ...

"A New Polymer Platform for the Future - Sorona from Corn Derived 1,3-Propanediol". Journal of Polymers and the Environment. 13 ... Strong acid cationic exchanger Strong base anionic exchanger Strong acid cationic exchanger Strong base anionic exchanger The ... The second cationic and anionic exchangers further reduce ion levels in solution. Note that hydrogen ions (H+ spontaneously ... The BioPDO distillate of the fourth distillation column has a purity of 99.97%, which is able to meet polymer- and fiber-grade ...

"Quantification of factors affecting coagulation of water with cationic polymers and laboratory methods for determining these ...

A hybrid vehicle composed of bacteria cell and synthetic polymers has been employed for DNA vaccine delivery. An E. coli inner ... This has been demonstrated by coating biodegradable cationic microparticles (such as poly(lactide-co-glycolide) formulated with ... Mucosal surface delivery has also been achieved using cationic liposome-DNA preparations, biodegradable microspheres, ... cationic liposome packaging, and other delivery methods bypass this entry method, but understanding it may be useful in ...

A study of the cationic, alkaline polymer SS299 (a commercially produced additive) found that the properties of treated soils ... the strength of the polymer bond, the thickness of the polymer layer, and the favorability of the solvent for the polymer loops ... Addition of polymer beyond this point causes the polymer to act as a lubricant, allowing the soil particles to slip across each ... Curing time after polymer addition can also affect the strength of the polymer-soil structures formed. After seven days of ...

Cationic and Anionic polymers, Metal precipitants, Flocculants as well as Organic and Silicone based Antifoams. http://www. ...

The final product is a dispersion of polymer particles in water. It can also be known as a polymer colloid, a latex, or ... Mixtures of cationic and anionic surfactants form insoluble salts and are not useful. Examples of surfactants commonly used in ... Consequently, the polymer particles in this case either have zero radicals (dormant state), or 1 radical (polymer growing state ... At this point the monomer-swollen micelle has turned into a polymer particle. When both monomer droplets and polymer particles ...

... who obtained the polymer through the cationic polymerization of isobutylene. The discovery of polyisobuteneamine followed as ... The molecular weight of the resulting polymer can be controlled by adjusting the reaction conditions and the choice of catalyst ... Polyisobuteneamine (PIBA) is a polymer derived from the reaction of polyisobutylene (PIB) with ammonia or primary amines. This ...

... , sold by the trade name Polyoxidonium by Petrovax NPO, is a water-soluble cationic polymer, adjuvant for use ... A derivative of poly(1,4-ethylene piperazine), it is synthesized by a partial oxidation of the parent polymer with hydrogen ... A dose-dependent increase in the intracellular killing by blood phagocytes has also been observed for this polymer. In another ... From synthetic polyelectrolytes to polymer-subunit vaccines. Pure Appl Chem 2004;76:1659-77. Karaulov AV, Bykov AS, Volkova NV ...

... is a useful solvent for polymers such as polystyrene and is particularly useful for dissolving cyanoacrylate ... which protonates to give a cationic surfactant. Like some other nitrated organic compounds, nitroethane is also used as a fuel ...

R. Acosta Ortiz et al., Novel diol spiro orthocarbonates derived from glycerol as anti-shrinkage additives for the cationic ... photopolymerization of epoxy monomers, Polymer International, 59(5), 680-685 (2010), doi:10.1002/pi.2755. (Articles without EBI ...

We used an anionic dye which forms a weakly fluorescent complex with the cationic viologen receptor. At and near physiological ... Incorporating the probe into a hydrogel polymer allowed for continuous monitoring of glucose concentrations in the ...

Journal of Polymer Science: Polymer Symposia. 48: 33-45. doi:10.1002/polc.5070480106. Gettleman, L.; Farris, C. L.; Rawls, H. R ... Cationic Polymerization of Phosphoranimines as an Ambient Temperature Route to Polyphosphazenes with Controlled Molecular ... Journal of Polymer Science Part B: Polymer Letters. 6 (12): 837-839. Bibcode:1968JPoSL...6..837R. doi:10.1002/pol. ... and they were incorporated into fire-resistant rechargeable lithium-ion polymer battery. The same polymers are also of interest ...

... also known as hydroabsorbent polymers, superabsorbent polymers or hydrogels) were tested in agriculture, horticulture and ... As an nonionic monomer it can be co-polymerize with anionic for example Acrylic acid and cationic monomer such as ... In addition to use on farm lands, these polymers are used at construction sites for erosion control, in order to protect the ... The appearance of a new generation of potentially effective tools in the early 1980s, including hydroabsorbent polymers and ...

Cationic head groups have a positive charge and cationic surfactants are used in several different applications. One common use ... Journal of Polymer Science: Polymer Letters Edition. 19 (10): 519. Bibcode:1981JPoSL..19..519W. doi:10.1002/pol.1981.130191009 ... Cationic head groups also increase the disinfecting properties of household cleaners. Some common cationic surfactants head ... The size of the droplets of dispersed polymer in a latex paint can be modeled with the following equation: R = 3 L s ϕ d ϕ s {\ ...

... the exact dosage of the cationic polymer as a dispersion stabilizer and retention aid as well as keeping the other process ... The molecular structure (i.e. molar mass and cross-linking degree), the molar charge density of cationic groups, ... acylated polyethyleneimines or cationic high molecular weight polyacrylamides with an average molar mass up to 7 million g/mol ... the reaction products for polymers. The molecular weight determined by the early researchers did indicate a multiple of the ...

Another application of polymer solutions includes the manufacture of fibers by wet or dry spinning or plastic films. ... Butyl rubber (IIR) by low temperature cationic copolymerization of isobutylene with isoprene in ethylene or methylchloride ... The reaction results in a polymer which is also soluble in the chosen solvent. Heat released by the reaction is absorbed by the ... This process is one of two used in the production of sodium polyacrylate, a superabsorbent polymer used in disposable diapers. ...

... has excellent impermeability to gas diffusion, and the long polyisobutylene segments of its polymer chains give it ... only via cationic addition polymerization. A synthetic rubber, or elastomer, butyl rubber is impermeable to air and used in ... for rubber and polymer modification, for protecting and sealing certain equipment for use in areas where chemical weapons are ... and Polymer Corporation, a Canadian federal crown corporation established in 1942 to produce artificial rubber to substitute ...