✦ LIBER ✦

Crosslinked copolymers of cyanoethylated cellulose

✍ Scribed by Manjunath Kamath; Braja K. Mandal

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 436 KB
Volume: 32
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(95)00143-3

No coin nor oath required. For personal study only.

✦ Synopsis

Two new cellulose copolymers have been developed by crosslinking cyanoethylated cellulose with reactive monomers or prepolymers of step-growth polymers such as polyurethane and polysiloxane. Both copolymers formed compatible transparent films at 50% loading of step-growth polymers. The films possess high impact resistance, water repellency and thermostability at 150°C for over 15 hr without weight loss. The kinetic parameters of crosslinking, such as conversion versus time and temperature, heat of reaction (AH), activation energy (AE), and reaction order (n), have been investigated.

The morphology of the fractured surfaces of the films as revealed by SEM is also discussed.

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