AN EXPERIMENTAL STUDY ON THE SOL/GEL PHASE TRANSITION OF LINEAR POLYMER IN THE PRESENCE OF CROSSLINKERS
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AN EXPERIMENTAL STUDY ON THE SOL/GEL PHASE TRANSITION OF LINEAR POLYMER IN THE PRESENCE OF CROSSLINKERS
Vol. 14, Issue 1, Pages: 63-70(1996)
Affiliations:
1. Polymer Physics Laboratory
2. Institute of Chemistry
3. Academia Sinica
4. Beijing 100080
5. Polymeres
6. Biopolymeres
7. Membranes
8. URA du CNRS Faculte des Sciences ,500
9. Universite de Rouen
10. Mont Saint-Aignan ,76134
11. France
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HAN Ming, SHI Lianghe, YE Meiling, et al. AN EXPERIMENTAL STUDY ON THE SOL/GEL PHASE TRANSITION OF LINEAR POLYMER IN THE PRESENCE OF CROSSLINKERS. [J]. 14(1):63-70(1996)
DOI:
HAN Ming, SHI Lianghe, YE Meiling, et al. AN EXPERIMENTAL STUDY ON THE SOL/GEL PHASE TRANSITION OF LINEAR POLYMER IN THE PRESENCE OF CROSSLINKERS. [J]. 14(1):63-70(1996)DOI:
AN EXPERIMENTAL STUDY ON THE SOL/GEL PHASE TRANSITION OF LINEAR POLYMER IN THE PRESENCE OF CROSSLINKERS
<正> The sol/gel phase diagrams were studied for two systems: polyacrylamide/Cr (III) andpolyacrylamide/glyoxal. Sol or gel phase could be distinguished according to the concen-trations of polymer and crosslinker. The boundary polymer concentration did not de-pend on the types of gelation and decreased with increasing polymer dimension (molecularweight and conformation). The gelation, which is basically interchain bonding, requires theoccurrence of entanglement. The overlap concentration is thus considered as the minimumpolymer concentration required for gelation.正>
Abstract
The sol/gel phase diagrams were studied for two systems: polyacrylamide/Cr (III) andpolyacrylamide/glyoxal. Sol or gel phase could be distinguished according to the concen-trations of polymer and crosslinker. The boundary polymer concentration did not de-pend on the types of gelation and decreased with increasing polymer dimension (molecularweight and conformation). The gelation, which is basically interchain bonding, requires theoccurrence of entanglement. The overlap concentration is thus considered as the minimumpolymer concentration required for gelation.