Sequential Interconnected Interpenetrating Polymer Networks of Polyurethane and Polystyrene. 1. Synthesis and Chemical Structure Elucidation

1994 ◽  
Vol 27 (16) ◽  
pp. 4583-4594 ◽  
Author(s):  
S. B. Pandit ◽  
V. M. Nadkarni
Keyword(s):  
Structure Elucidation ◽  
Chemical Structure ◽  
Polymer Networks ◽  
Interpenetrating Polymer Networks

A Topologically Interpenetrating Elastomeric Network

1970 ◽  
Vol 43 (4) ◽  
pp. 883-886 ◽  
Author(s):  
H. L. Frisch ◽  
D. Klempner ◽  
K. C. Frisch
Keyword(s):  
Chemical Structure ◽  
Chain Transfer ◽  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Transfer Reactions ◽  
Liquid Phases ◽  
Linear Poly ◽  
Hydrolysis Of ◽  
Crosslinking Agents ◽  
Partial Chemical

Abstract While chemically different monomers can be mixed, the mixing of the corresponding polymers in the solid state usually results in (multiphase) polyblends. Even the mixing of two different polymer solutions generally produces two liquid phases. This difficulty can be overcome, without resorting to grafting, by producing interpenetrating polymer networks (IPN). By crosslinking an initially linear polymer in the presence of a crosslinked network we can produce a polymeric catenane or an IPN held together predominantly by “permanent” entanglements, assuming chain transfer reactions can be suppressed. Several workers have made IPN's from either chemically identical or chemically similar polymers and have studied their properties. In this work, two different elastomers, a crosslinked polyether-based poly(urethane-urea) and a linear poly(butadiene-acrylonitrile), as aqueous emulsions, are mixed, together with crosslinking agents and stabilizers, films cast, and subsequently cured to form the IPN. A partial chemical structure proof is obtained by separating the crosslinked poly(butadiene-acrylonitrile) from the IPN by essentially total hydrolysis of the interpenetrating poly(urethane-urea) network.

scholarly journals The microscopic distribution of hydrophilic polymers in interpenetrating polymer networks (IPNs) of medical grade silicone

Polymer ◽  
2021 ◽  
Vol 224 ◽  
pp. 123671
Author(s):  
Gregory N. Smith ◽  
Erik Brok ◽  
Martin Schmiele ◽  
Kell Mortensen ◽  
Wim G. Bouwman ◽  
...  
Keyword(s):  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Hydrophilic Polymers ◽  
Microscopic Distribution ◽  
Medical Grade

Tough Underwater Super-tape Composed of Semi-interpenetrating Polymer Networks with a Water-Repelling Liquid Surface

2020 ◽  
Author(s):  
Jiayi Liu ◽  
Shixiang Wang ◽  
Qiaoqiao Shen ◽  
Lingmin Kong ◽  
Guangsu Huang ◽  
...  
Keyword(s):  
Liquid Surface ◽  
Polymer Networks ◽  
Interpenetrating Polymer Networks

Organic-solvent-free electromembrane extraction based on semi-interpenetrating polymer networks

2021 ◽  
Author(s):  
Hang Mei ◽  
Huajing Liu ◽  
Qianqian Shang ◽  
Ying Dong ◽  
Stig Pedersen-Bjergaard ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Solvent Free ◽  
Electromembrane Extraction ◽  
Acidic Analytes

A versatile organic-solvent-free electromembrane extraction (EME) system, which could be successfully used for the extraction of both basic and acidic analytes, is proposed based on semi-interpenetrating polymer networks.

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