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The mechanism of photo-induced polymerization and the effect of the stability of sulfur radical on block copolymerization are also discussed. 对于光引发聚合的原理及硫自由基的稳定性对聚合反应的影响也进行了讨论。
It was shown, that contents of hard segments and molecular weights of soft segments affect the. block copolymerization reaction, especially, the formation of homopolymer. 研究了硬段含量和软段分子量对嵌段共聚合过程的影响。当软段分子量较大、硬段含量较高时,在嵌段共缩聚过程中有均聚物伴生。
Keywords PEEKK-PES block copolymer;block copolymerization;polycondensate; 聚醚醚酮酮-聚醚砜嵌段共聚物;嵌段共聚;缩聚物;
Abstract： The effects of three kinds of catalyst, such as zinc acetate, potassium titanyl oxalate and titanium dioxide, on the block copolymerization of polyether-polyester were studied. 摘要：研究了醋酸锌、草酸钛钾和二氧化钛三种催化剂对聚醚聚酯嵌段共聚合反应的催化作用,以及对共聚物热稳定性的影响。
STUDIES ON CONTINUOUS ULTRASONIC BLOCK COPOLYMERIZATION OF HYDROXYETHYLCELLULOSE WITH POLY(ETHYLENE OXIDE)AND THE PROPERTIES OF THE COPOLYMER 羟乙基纤维素与聚氧化乙烯连续超声嵌段共聚及共聚物性能的研究
He is a great guy, a chip off the old block. 他是一位好人，就像他父亲一样。
Synthetic methods of preparing compatibilizers for PE/PS alloys are summarized.These methods include graft copolymerizing block copolymerizing and reactive compatibilizing. 综述PE／PS合金相容剂的合成方法，包括接枝共聚法、嵌段共聚法和反应性增容法。
STUDY ON BLOCK COPOLYMERIZATION OF CAST NYLON 6 FOR ITS MODIFICATION 铸型尼龙6嵌段共聚合改性的研究
That old block of flats is a real eyesore! 那座旧公寓真不顺眼！
The SBS block copolymer is one kind. SBS嵌段共聚物就是一种。
The office block is under offer. 办公大楼已有人出价购买。
He used his casting vote to block the motion. 他用他的投票反对动议的通过。
A heavy snowfall block the main road. 一次严重的降雪阻塞了主要公路。
Write your name in block capitals, please. 姓名请用大写。
Gas phase block copolymerization of butadiene and isoprene with supported neodymium naphthenate catalytic system 负载型环烷酸钕体系催化丁二烯与异戊二烯的气相嵌段共聚合
He buy a block of share in mark and spencer. 他购买了“麦克斯和斯潘塞百货联销店”的大宗股份。
He has a mental block about maths. 他一遇到数学问题就糊涂。
Japan exercised her veto to block the resolution. 日本使用了否决权反对该项决议。
The company occupies three floors block. 这家公司占用了办公室大楼的三层楼房。
The man cleft a block of wood in two with an axe. 那人用斧头把一块木头劈成两半。