A Novel Method to Control the Elution Behavior of PVA Cast Gels

Saori Sasaki, Atsushi Suzuki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Poly(vinyl alcohol) (PVA) gels, prepared by a cast-drying method, show excellent swelling and mechanical properties. However, the elution of polymers from such gels is one of the major hindrances for practical applications. In this study, PVA cast gels were prepared from a PVA powder, with a high degree of polymerization and hydrolysis, under different temperatures and humidities. The swelling ratio, elution ratio, crystallinity, and microcrystallite size were evaluated, and these were compared with each other. The lowest elution rate (<1%) was obtained under conditions of high drying temperature and high humidity. This indicates that polymer elution can be suppressed by controlling the size, number, and distribution of the microcrystallites.

Original languageEnglish
Pages (from-to)170-175
Number of pages6
JournalMacromolecular Symposia
Volume358
Issue number1
DOIs
Publication statusPublished - Dec 1 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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