聚苯乙烯

The soapless polystyrene latex particles were prepared by using microwave irradiation in a closed reactor under controlled pressure, microwave irradiation and water bathing under normal pressure, respectively.

分别用控压微波辐照法、常压微波辐照法和常压水浴合成法制备出无皂聚苯乙烯胶乳粒子。

First, 4-(2, 3-epoxypropoxyl) benzaldehyde was obtained by reaction of 4-hydroxy benzaldehyde and epichlorohydrin. Then, the Wittig reaction was carried out to convert EBD to styryl glycidyl ether.

首先用对羟基苯甲醛和环氧氯丙烷反应制备4-(2， 3-环氧丙氧基)苯甲醛，然后通过Wittig反应将醛基转化为乙烯基得到含环氧基团的功能性单体苯乙烯基环氧丙基醚，最后用ATRP方法聚合单体SGE得到含环氧侧基的聚苯乙烯。

Poly（p-vinylbenzyl succinimide） resin,which can be abbreviated to succinimide resin,was prepared by the reaction of chloromethylated polystyrene with succinimide in the presence of base. The succinimide resin was characterized by diffuse reflectance infrared Fourier transform spectrometry and elemental analysis.

摘 要：在碱性条件下，氯甲基化聚苯乙烯与丁二酰亚胺反应合成了聚（对乙烯基苄基丁二酰亚胺）树脂，采用元素分析、红外光谱对合成树脂的组成进行了表征。

It is confirmed by the FTIR spectra that the sulfonic acid groups have been linked to PS.

通过傅立叶红外光谱表征证明，磺酸基已经被引入到聚苯乙烯的苯基侧链上。

A series of tri-block copolymers of styrene/tetradecyl methyl acrylate/3-methacryloxyl-propyl thimethoxyl silane was synthesized by atom transfer radical polymerization. The structures of those copolymers were characterized by means of gel permeation chromatography, infrared spectrum, and nuclear magnetic resonance (1H-NMR). Effect of tri-block copolymers on the mechanical properties of glass fiber/polypropylene composites was also investigated.

采用原子转移自由基聚合法合成了一系列新的三嵌段共聚物大分子偶联剂聚苯乙烯－b-聚甲基丙烯酸十四酯－b-聚3-甲基丙烯酰氧基丙基三甲氧基硅烷，通过凝胶渗透色谱、红外光谱和核磁共振(1H-NMR)证实了其结构，并研究了其对玻璃纤维／聚丙烯复合材料力学性能的影响。

The Limit Oxygen Index also can be raised from 16.5 to 22 and 23 respectively.The Octaphenyl POSS is synthesized via the hydrolysis and condensation of phenyltrichlorosilane (PhSiCl_3) and the subsequent rearrangement reaction catalyzed by tetramethylammonium hydroxide. Poly are easily synthesized from Ph-POSS via bromination with Br_2/Fe system.

以苯基三氯硅烷为起始原料，通过水解缩合、催化重排的办法制备了八聚苯基笼型倍半硅氧烷，在Fe粉催化条件下将溴元素引入Ph-POSS的苯环得到Br-POSS；使用该种Br-POSS和Sb_2O_3的混合物(3∶1，质量比)作为聚苯乙烯树脂的添加剂，采用熔融共混法制备(Br-POSS+Sb_2O_3)／PS复合材料。

A novel macromonomer,polystyrene capped with thienyl group,which can undergos oxidation coupling polymerization,has been synthesized by anionic polymerization of styrene with butyl lithium as the initiator and 3-bromo-thiophene as the terminator.

以丁基锂为引发剂、四氢呋喃为溶剂，在氮气气氛和-78℃下进行苯乙烯阴离子聚合，并加入 3-溴噻吩作为终止剂，从而合成出末端含噻吩基的聚苯乙烯，它可以进行氧化偶联聚合，是一类新的大分子单体。

High impact polystyrene ; organic-montmorillonite ; composites ; polyammonium tribasic phosphate ; flame retardancy

高抗冲聚苯乙烯；有机蒙脱土；复合材料；聚磷酸铵；阻燃性能

The chemical composition and the structure of nanometer-size PS particles wese studied carefully by differential scanning calorimetry,thin-layer chromatography,solubility measurement,infrared spectrum etc.

采用溶解溶胀法、红外光谱、差示扫描量热分析、薄层色谱分离等测试手段对所制备聚苯乙烯粒子的化学组成及其结构进行了研究。

A series of polymers containing 1,8-naphthalimide moieties in the side chains have been prepared via RAFT technique. Firstly, five styrene and two methyl acrylate based 1,8-naphthalimide monomers were synthesized and characterized. Then, carbazyl group terminated polystyrene was used as macromolecular RAFT agent.

我们合成了5种苯乙烯类和2种甲基丙烯酸酯类萘酰亚胺单体，以一种含末端带咔唑结构的聚苯乙烯为大分子RAFT试剂，考察了所得单体的RAFT聚合，发现苯乙烯类1，8-萘酰亚胺单体可以聚合，但是聚合度不高，甲基丙烯酸酯类1，8-萘酰亚胺单体RAFT聚合不可控。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。