文献类型：期刊文献

英文题名：Thermal degradations of chlorinated natural rubber latex and chlorinated natural rubber solution

作者：Cai, Ying[1]; Li, Si-Dong[1]; Li, Cheng-Peng[1]; Li, Pu-Wang[1]; Wang, Chen[1]; Lv, Ming-Zhe[1]; Xu, Kui[1];蔡鹰[2];

机构：Guangdong Ocean Univ, Coll Sci, Zhanjiang 524088, Peoples R China; Chineses Acad Trop Agr Sci, Agr Pord Processing Res Inst, Agr Minist Key Lab Nat Rubber Proc, Zhanjiang 524001, Peoples R China

年份：2007

卷号：106

期号：2

起止页码：743

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000248891200004)、、EI(收录号：20073710813070)、Scopus(收录号：2-s2.0-34548530860)、WOS

语种：英文

外文关键词：chlorinated natural rubber; thermal degradation; thermal stability; chlorinated process

外文摘要：The thermal degradations of chlorinated natural rubbers latex (CNR-L) and solution (CNR-S) under nitrogen atmosphere were studied with thermogravimetric analysis (TGA). The thermal degradations of CNR-L and CNR-S are one-step reaction. The shapes of the thermogravimetric and derivative thermogravimetric curves are similar. The degradation temperatures of CNR-L and CNRS increase linearly with the increment of heating rates. The heating rate hardly affects the thermal degradation rates of CNR-L and CNR-S at the various degradation stages. The thermal degradations of CNR-S and CNR-L are dehydrochlonation reactions. The reaction activation energy (E) of CNR, at the first stage, is around 100 kJ/mol. After that, E remains relatively steady (80-140 kJ/mol). At the last stage, E rises rapidly (130-270 kJ/mol). The variation tendency of frequency factor (A) is similar to that of E. As the initial degradation temperature To of CNR-L is 10.9＇＇C lower than that of CNR-S, the thermal stability of CNR-S is better than that of CNR-L, which may be caused by the difference of molecular structure between CNR-L and CNR-S, as FTIR results indicate that there are more -OH, -C=O and -COOgroups in the CNR-L molecular chains. (c) 2007 Wiley Periodicals, Inc.