Semi-interpenetrating polymer networks prepared from in situ cationic polymerization of bio-based tung oil with biodegradable polycaprolactone

Microphase-separated semi-interpenetrating polymer networks (semi-n Ns) were obtained by curing 4,4'-bismaleimidodiphenylmethane (BMII), which was advanced in situ with diamine-terminated oligo(phenylene sulfide) (PPS-DA), in the presence of a non-crosslinked linear high-T, aromatic polyether. Poly(thioether amide imide) (PTEAI) containing two phenylene sulfide units, Ultems 1000 poly(ether imide) (PEI) and benzophenone tetracarboxylic acid anhydride/diaminophenylindane polyimnide XU 218$ (PI) were used as non-crosslinked modifiers for the sulfur-containing BMI/PPS-DA resin system, which formed the continuous polymer matrix. Morphological and mechanical properties of the polyether-modified BMI/PPS-DA resin systems were investigated as a function of semi-n?,-compositions and polymer compatibilities. The soluble high-TA P1 gave improved strength and toughness without sacrificing the high T, of the resulting multiphase semi-iPNS.

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Obtención de materiales híbridos homogéneos de tipo Orgánico/Inorgánico

Revista de Energía Química y Física ◽

10.35429/jcpe.2019.20.6.14.19 ◽

2019 ◽

pp. 14-19

Author(s):

Virginia Ramírez-Salas ◽

Beatriz Eugenia Moreno-Martínez ◽

Erika Alarcón-Ruiz ◽

Luis Daniel Ordoñez-Pacheco

Keyword(s):

Polymer Networks ◽

Interpenetrating Polymer Networks ◽

Coupling Agents ◽

Propyl Methacrylate ◽

Fourier Transformed Infrared Spectroscopy ◽

Optically Transparent ◽

System Coupling ◽

Binary Networks ◽

Inorganic Network

Tridimensional polymers are mutually incompatible and a solution is the formation of interpenetrating polymer networks (IPN’s). In order to obtain optically transparent plaques, the polyurethane (PU), polymethylmetacrylate (PMMA) and sílica (SiO2) were syntetized and we obtained the best conditions of reaction for each material. We sintetized the binary networks and the ternary ones with different percentage from sílica were obtained, incorporating to the system 10% in weight of sílica, carrying out a curing in situ in mass. The interest of this work lies in the association of an inorganic network (SiO2) to two organic networks PU and PMMA. In order to reduce the phase separation that occurs in the PU, PMMA and SiO2 system, coupling agents of organic/inorganic nature were introduced. Optically transparent plaques were obtained using trimethoxysilyl propyl methacrylate and isocyanatopropyl triethoxy silane. The materials were characterized by Fourier Transformed Infrared Spectroscopy, verifying the presence of representative functional groups in each of the samples. The purpose of incorporating these materials to a single network is the improvement of the mechanical, optical and thermal properties of the organic polymers.

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In situ calcium phosphate deposition in hydrogels of poly(acrylic acid)–polyacrylamide interpenetrating polymer networks

RSC Advances ◽

10.1039/c5ra26066c ◽

2016 ◽

Vol 6 (20) ◽

pp. 16274-16284 ◽

Cited By ~ 3

Author(s):

M. S. Simeonov ◽

A. A. Apostolov ◽

E. D. Vassileva

Keyword(s):

Calcium Phosphate ◽

Acrylic Acid ◽

Polymer Networks ◽

Interpenetrating Polymer Networks ◽

Interpenetrating Networks ◽

Naturally Occurring ◽

First Time ◽

Poly Acrylic Acid

Interpenetrating networks of poly(acrylic acid) and polyacrylamide were used for the first time as templates for in situ calcium phosphate (CP) deposition in an attempt to mimic the naturally occurring biomineralization.

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