MORPHOLOGY AND DYNAMIC MECHANICAL-PROPERTIES OF AB CROSS-LINKED POLYMERS BASED ON POLYURETHANES
文献类型：期刊论文
| 作者 | LIU JJ ; LIU WZ ; ZHOU HR ; HOU CR ; NI S |
| 刊名 | polymer
 |
| 出版日期 | 1991 |
| 卷号 | 32期号:8页码:1361-1368 |
| 关键词 | CASTOR-OIL ELASTOMERS NETWORK FORMATION SBR-PS POLYSTYRENE BEHAVIOR SYSTEMS |
| ISSN号 | 0032-3861 |
| 通讯作者 | liu jj |
| 中文摘要 | polyoxypropylene glycol (ppg) (or castor oil) and toluene diisocyanate (tdi) were mixed, and the prepolymer polyurethane (pu) (i) was formed. vinyl-terminated polyurethane (ii) was prepared from (i), and hydroxyethyl acrylate, ab crosslinked polymers (abcps) were synthesized from (ii) and vinyl monomers such as styrene, methyl methacrylate, vinyl acetate, etc. the dynamic mechanical properties and morphology of abcps were measured. the abcps based on ppg have double glass transition temperatures (t(g)) on the sigma-vs. temperature curves. they display a two-phase morphology with plastic components forming the continous phase and pu-rich domains forming the separated phase on the electron micrographs. irregular shapes and a highly polydisperse distribution of pu-rich domain sizes were observed. the crosslink density of abcps has a notable effect on the morphology and properties. the average diameter of the pu-rich domains depends on the molecular weight of prepolymer ppg. the highly crosslinked structures will produce large numbers of very small domains. abcps based on castor oil show a single t(g) relaxation on the dynamic mechanical spectra. the compatibility between the two components is much better in abcps based on castor oil than in those based on ppg, because there is a high crosslink density in the former. comparison of the dynamic mechanical spectra of abcp and interpenetrating networks (ipn) based on castor oil with similar crosslink density and composition imply that the two components in abcp are compatible whereas microphase separation occurs in ipn. an improvement in the compatibility is achieved by the crosslinking between the two networks. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| 公开日期 | 2011-03-03 ; 2011-06-10 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/38463]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | LIU JJ,LIU WZ,ZHOU HR,et al. MORPHOLOGY AND DYNAMIC MECHANICAL-PROPERTIES OF AB CROSS-LINKED POLYMERS BASED ON POLYURETHANES[J]. polymer,1991,32(8):1361-1368. |
| APA | LIU JJ,LIU WZ,ZHOU HR,HOU CR,&NI S.(1991).MORPHOLOGY AND DYNAMIC MECHANICAL-PROPERTIES OF AB CROSS-LINKED POLYMERS BASED ON POLYURETHANES.polymer,32(8),1361-1368. |
| MLA | LIU JJ,et al."MORPHOLOGY AND DYNAMIC MECHANICAL-PROPERTIES OF AB CROSS-LINKED POLYMERS BASED ON POLYURETHANES".polymer 32.8(1991):1361-1368. |
入库方式： OAI收割
来源：长春应用化学研究所
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