標題: OPTICALLY CLEAR SIMULTANEOUS INTERPENETRATING POLYMER NETWORKS BASED ON POLY(ETHYLENE GLYCOL) DIACRYLATE AND EPOXY .1. PREPARATION AND CHARACTERIZATION
作者: LIN, MS
JENG, KT
交大名義發表
應用化學系
National Chiao Tung University
Department of Applied Chemistry
關鍵字: IPN FORMATION;H-BONDING;NETWORK INTERLOCK;VISCOSITY INCREASE COMPATIBILITY;CURE RATE
公開日期: 1-Aug-1992
摘要: Poly(ethylene glycol) diacrylate was synthesized from poly(ethylene glycol) of molecular weight 600 with acryloyl chloride in a molar ratio of 1 : 2. Poly (ethylene glycol) diacrylate (PEGDA) was then blended with diglycidyl ether of bisphenol A (DGEBA) in various ratios, followed by curing with 2,2'-azobisisobutyronitrile (AIBN) and isophronediamine (IPDA) simultaneously. Viscosity changes before and during IPN formation were examined with a Brookfield viscometer. Formation of H-bonding and functional group changes were investigated with FTIR. Exothermic curing thermograms were recorded with dynamic DSC. Optically clear IPNs thus obtained were characterized with rheometric dynamic spectroscopy (RDS) and scanning electron microscopy (SEM) to check possible compatibility of the two networks. Experimental results revealed that during IPN formation hydrogen bonds between PEGDA and DGEBA and interlock of networks had profound effect on viscosity change and pot-life. Complete compatibility of the IPNs was found as DGEBA content was higher than 50% by weight. The compatibility between PEGDA and DGEBA networks was evidenced from inner shift of a single damping peak in RDS. In the meantime, SEM micrographs confirmed the coincidence with the result of RDS
URI: http://dx.doi.org/10.1002/pola.1992.080300917
http://hdl.handle.net/11536/3335
ISSN: 0887-624X
DOI: 10.1002/pola.1992.080300917
期刊: JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume: 30
Issue: 9
起始頁: 1941
結束頁: 1951
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