Journal ArticleDOI
Effects of macromolecular matrix on the process of radical polymerization of ionizable monomers
Eishun Tsuchida,Yoshihito Osada +1 more
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TLDR
In this article, the authors studied the polymerization of methacrylic acid (MAA) and acrylic acid (AA) in the presence of a positively charged macromolecular matrix.Abstract:
Radical polymerization of methacrylic acid (MAA) and acrylic acid (AA) in the presence of a positively charged macromolecular matrix was studied. In the presence of a matrix, the rates of polymerization were remarkably increased, especially in high pH region. This suggests that electrostatic interaction between the macromolecular matrix and the growing chains and/or the monomer molecules plays an important role in the process of polymerization reaction. The kinetic orders were greatly influenced by the relative matrix concentration (PC) as follows: for (PC)0 > [M]0, Rp = k[M]0.9 [PC]0.3 [I]0.8≤ [M]0Rp = k[M]0.3[PC]0[I]0,8 where [M] and [I] are monomer and initiator concentration, respectively, and k is a constant. The mechanism of the interaction of matrix with monomer and/or growing chains in the process of the propagation is discussed. The complex formed in the matrix polymerization could be easily made into fiber by spinning.read more
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Journal ArticleDOI
Template polymerisation and co-polymerisation
TL;DR: The general characteristics of template polymerization were discussed on the basis of examples of template radical polymerization, template co-polymerisation, poly condensation or addition as discussed by the authors, and the formation of interpolymer complexes and ladder-type polymers.
Patent
Responsive polymer networks and methods of their use
Lev Bromberg,E. Cornelius Lupton,Matthew E. Schiller,Mary J. Timm,George W. Mckinney,Michal Orkisz,Barry J. Hand +6 more
TL;DR: In this paper, a responsive polymer network exhibiting the property of reversible gelation in response to a change in an environmental stimulus is provided, where the aqueous solution of the network polymer, comprises about 0.01 to 20 wt % by weight of a responsive component and about 1.5 to 5 fold increase in viscosity upon gelation.
Journal ArticleDOI
Novel Family of Thermogelling Materials via C−C Bonding between Poly(acrylic acid) and Poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide)
TL;DR: In this paper, an exponential increase of branching and cross-linking in the resulting Pluronic−PAA copolymers is observed at high degrees of conversion of acrylic acid.
Journal ArticleDOI
A Comprehensive Simulator/Database Package for Reviewing Free-Radical Homopolymerizations
J. Gao,Alexander Penlidis +1 more
TL;DR: This work simulates free-radical homopolymerizations under restricted polymerization conditions with real-world examples of several different types of monomer systems.
Book ChapterDOI
Molecular “recognition” in interpolymer interactions and matrix polymerization
I. M. Papisov,A. A. Litmanovich +1 more
TL;DR: In this paper, the role played by selectivity in matrix synthesis of polymers has been discussed and a review of the results of theoretical and experimental investigations into selectivity for interpolymer reactions is presented.
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