交联大分子的合成与表征  

SYNTHESIS AND CHARACTERIZATION OF MACROMOLECULE WITH CROSSLINKED STRUCTURE

作　　者：栗方星[1] 徐景瑞[1] 于芳菲[1] 陈胜男[1] 于翔[1] 杨晓英[1] 安英丽[1] 左榘[1] 密怀风[1] 

机构地区：[1]南开大学化学系,南开大学吸附分离功能高分子材料国家重点实验室,天津300071

出　　处：《高分子材料科学与工程》2002年第6期32-36,共5页Polymer Materials Science & Engineering

摘　　要：设计了含有分子内反应和分子间反应的聚合体系 ,这是一对竞争反应 ,竞争的结果可达到一定的平衡 ,使无法控制的凝胶化过程得以控制 ,从而合成了具有交联结构的大分子。通过分子尺寸的测定还发现了交联大分子在溶液中的特殊行为 。As all known macromolecules are consist of linear, branched, comb, star and cyclic macromolecules. Because the crosslinked polymer is insoluble and not melted and crosslinking polymerization can not be controlled, macaromolecule with crosslinked structure has not been produced by now. In this paper the system with intermolecular reaction and intramolecular reaction was designed. Intermolecular reaction makes molecular weight of macromolecule rise continuously and forms crosslinking structure. In intramolecular reaction the active end-groups would be expensed and it prevents intermolecular reaction from developing unlimitedly, and the crosslinking polymerization process is controlled. It is crosslinked macromolecule instead of crosslinked polymer that is formed. The breaking elongation of samples in our paper is 2180%, which is very high and not seen in literatures. Through the measurement of molecular size, from the characterization of samples in solutions macromolecule synthesized possesses net-like structure.

关 键 词：合成 表征 交联大分子 分子内反应 分子间反应 聚氧化四甲撑二元醇 

分 类 号：TQ316.64[化学工程—高聚物工业] O631.6[理学—高分子化学]