Structure-property relationships in thermoplastic pseudo-interpenetrating polymer networks. I. Phase morphology

 
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1997 (EN)

Structure-property relationships in thermoplastic pseudo-interpenetrating polymer networks. I. Phase morphology (EN)

Grigoryeva, OP (EN)
Sergeeva, LM (EN)
Privalko, EG (EN)
Kyritsis, A (EN)
Zimich, ON (EN)
Privalko, VP (EN)
Pissis, P (EN)
Shtompel, VI (EN)

Pseudo-thermoplastic interpenetrating polymer networks (p-TIPNs) prepared by mechanical mixing of a crystallizable polyurethane (CPU) and styrene/acrylic acid random copolymer (S/AA) were characterized by specific heat capacity measurements in the temperature interval 133-433 K, as well as by wide-angle and small-angle X-ray scattering. It was established that: 1. Crystallizability of BAG is the main cause of microphase-separated morphology of CPU. 2. Limited miscibility of CPU with S/AA significantly affects the phase morphology of p-TIPNs on their base. Mixed microphase of fixed composition [CPU/(S/AA) = 90/10] and essentially pure microphase of S/AA are the main structural entities in as-quenched samples of p-TIPNs of whatever nominal composition. More complex phase morphology (that is, coexistence of essentially pure microphases of crystallized BAG and of S/AA, and of the mixed CPU/(S/AA) microphase enriched with S/AA) is expected for initial samples. (EN)

journalArticle (EN)

Phase morphology (EN)
Polymer blends (EN)
Thermoplastics (EN)
Phase composition (EN)
Materials Science, Multidisciplinary (EN)
Crystallization (EN)
Polyurethanes (EN)
Random copolymer (EN)
Specific heat (EN)
Engineering, Chemical (EN)
Copolymers (EN)
Polymer networks (EN)
Mechanics (EN)
Pseudo-interpenetrating polymer networks (EN)
Interpenetrating polymer networks (EN)
Crystallizable polyurethane (EN)
Random copolymers (EN)


Journal of Adhesion (EN)

English

1997 (EN)

1-4 (EN)
171 (EN)
10.1080/00218469708010537 (EN)
161 (EN)
0021-8464 (EN)
ISI:000072355600009 (EN)
64 (EN)

GORDON BREACH SCI PUBL LTD (EN)




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