羧基偏氯乙烯丁苯胶乳粒子的相态结构和应用性能

以过硫酸铵为引发剂，十二烷基硫酸钠为乳化剂，采用种子聚合工艺，合成了偏氯乙烯质量分数为２３％～４３％的羧基偏氯乙烯丁苯胶乳。通过电镜观察到所合成的胶乳粒子具有核－壳结构。通过测定胶闰子表面层的羧基数量，研究了羧基的分布，结果表明，羧酸种类对羧基在胶乳粒子中及在聚合体系中的分布有重要影响，该胶乳作为地毯背衬粘合剂，具有粘合力高，极限氧指数高的特点，是一种较好的阻燃性粘合剂。     

聚(苯乙烯-co-丙烯腈)-b-聚苯乙烯两嵌段共聚物的合成

以CuBr／N，N，N’，N’，N'-五甲基二亚乙基三胺(简称NNN)为催化体系，研究了原子转移自由基聚合法(ATRP)PS-b-P(S-co-AN)两嵌段聚合物的合成。研究了聚合顺序对相对分子质量及其分布和嵌段效率的影响，并且用聚合物末端C—Br键的断裂能对实验结果进行了初步解释。     

苯乙烯的生产回收技术及其进展

苯乙烯是重要的有机化工原料，在高分子材料生产等方面具有非常广泛的应用价值。本文介绍了乙苯脱氢、乙苯共氧化和甲苯氧化偶联等多种苯乙烯的生产技术方法，同时介绍了苯乙烯的回收技术及其进展。     

Concentrated emulsion polymerization for preparation of β‐cyclodextrin‐supported chromatography columns

Concentrated inverse emulsion polymerization was used for making chromatography columns (based on crosslinked polystyrene divinylbenzene (PS‐DVB)) with pore sizes less than 10 μm. According to DSC‐thermal gravimetry thermograms, it was confirmed that the residual monomer concentration after polymerization process is negligible. For application of these columns in chiral chromatography, the β‐cyclodextrin is chemically fixed on the PS‐DVB resin pore surface. The presence of hydroxyl groups in the PS‐DVB resin after chemical modification was confirmed by FTIR spectroscopy. By chemical modification of the PS‐DVB resin, thermal stability increased up to 446°C. The structure of columns was analyzed by scanning electron microscopy (SEM). SEM evaluations showed that the porous structure of PS‐DVB resin was maintained intact after the chemical modification with β‐cyclodextrin. According to X‐ray data, presence of the crystalline domain that is related to β‐cyclodextrin is confirmed.© 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 857–863, 2006     

固相接枝共聚法制备PP—g—PS

用固相接枝共聚方法制备了聚丙烯接枝苯乙烯(PP-g-PS),详细地考察了聚丙烯与引发剂的品种、反应温度、苯乙烯及引发剂的浓度等因素对接枝率和接枝效率的影响。研究结果表明:PP-g-PS具有较高的接技率,应用于聚丙烯/聚苯乙烯(PP/PS)共混物中,能降低分散相PS的粒径,提高PP/PS的相容性。     

POE-g-MAH及其在增韧尼龙6中的应用

利用熔融接枝法制备了马来酸酐接枝乙烯-辛烯共聚物（POE-g—MAH），探讨了各个因素对POE-g—MAH接枝率和熔体流动速率（MFR）的影响，并得出了最佳配方、最佳工艺条件。将POE与接枝产物POE-g—MAH同时作为弹性体改性PA6时，体系的缺口冲击强度较纯尼龙提高近9倍，而其他力学性能改变不大。     

聚苯乙烯二醋酸碘苯在芳丙酮1,2-芳基迁移重排反应中的应用

在聚苯乙烯二醋酸碘苯催化下,芳丙酮进行1,2-芳基迁移重排制得2-芳丙酸甲酯,后者水解得2-芳基丙酸。硫酸和原甲酸三甲酯的用量对合成2(6甲氧基2萘基)丙酸甲酯收率有影响,聚苯乙烯碘苯可回收利用。     

Novel method for preparation of quaternary ammonium ionomer from epoxidized styrene–butadiene–styrene triblock copolymer and its use as compatibilizer for blending of styrene–butadiene–styrene and chlorosulfonated polyethylene

A novel method for the preparation of a quaternary ammonium ionomer of styrene–butadiene–styrene triblock copolymer (SBS) was developed by a ring‐opening reaction of epoxidized SBS with triethylamine hydrochloride in the presence of a phase transfer catalyst. The optimum conditions were studied. The ionomer was characterized by quantitative analysis, IR spectroscopy, and ¹H‐NMR spectroscopy. Its water absorbency, oil absorbency, dilute solution viscosity, and use as a compatibilizer for the blending of SBS and chlorosulfonated polyethylene (CSPE) were investigated. The results showed that, under optimum conditions, the epoxy groups can be completely converted to the quaternary ammonium groups. The IR spectrum did not exhibit the absorption peak for quaternary ammonium groups, whereas the ¹H‐NMR spectrum and titration method demonstrated it. With increasing ionic group content, the water absorbency of the ionomer increased whereas its oil absorbency decreased. These indicated the amphiphilic character of the SBS ionomer. The dilute solution viscosity of the ionomer in toluene/methanol (9/1) solvent increased with increasing quaternary ammonium group content. The ionomer was used as a compatibilizer for the blends of SBS and CSPE. The addition of a small amount of the ionomer to the blend enhanced the mechanical properties of the blends: 2 wt % ionomer based on the blend increased the tensile strength and ultimate elongation of the blend nearly 2 times. The blends of equal parts SBS and CSPE behaved as oil‐resistant thermoplastic elastomers. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 1975–1980, 2006     

有机-无机(硅溶胶)复合涂料的制备

有机-无机(硅溶胶)复合涂料，既具有硅溶胶耐候性好、硬度高、附着力强、耐水、耐碱、耐沾污等特点，又具有有机聚合物成膜性好、韧性大、光泽高等特点。本法选用江阴国联化工有限公司生产的交联改性的苯乙烯-丙烯酸酯乳液与硅溶胶通过物理混拼法，并辅以适当的颜填料、助剂制备的涂料，可作为外墙封闭型底漆用于水泥砂浆、混凝土等硅酸盐基材及用于外墙装饰。文章还述及制备工艺及注意事项。