Nd（P_（507））_3－Al（i－Bu）_3催化马来酸酐与环氧丙烷开环交替共聚

本文研究了马来酸酐和环氧丙烷交替共聚，发现Ｎｄ（Ｐ_（５０７））_３－Ａｌ（ｉ－Ｂｕ）_３是马来酸酐（ＭＡｎ）和环氧丙烷（ＰＯ）交替共聚的良好催化剂，并用红外光谱，核磁共振谱研究了共聚物的结构。     

马来酸酐与1，2－环己烷二羧酸二异丁酯的气液平衡

采用小沸点仪测定了马来酸酐和1,2－环己烷二羧酸二异丁酯二元系统在不同配料组成条件下的温度与压力数据，并通过内插法得到不同压力下的温度与配料组成的数据.进一步采用单纯形法优化NRTL方程参数，推算了平衡气液相组成，发现该二元系统具有最高压力恒沸点，且该恒沸点随压力的变化显著.当压力降低至20 kPa时, 由温度随气相组成的变化趋势知该恒沸点将趋于消失.     

间规聚苯乙烯的化学改性

介绍了间规聚苯乙烯（sPS)的结构，特性和各种化学改性方法，包括在sPS侧链苯环上引入磺酸基，卤素等功能基因，在sPS分子链末端引入马来酸酐，丙烯酸酯等极性基因，与氢化丁二烯－苯乙烯热塑性弹性体（SEBS）形成接枝共聚物，及其与各类烯烃单体的共聚，对进一步拓宽sPs的应用领域具有重要意义。     

Controlled alternating copolymerization of St with MAh in the presence of DBTTC

The copolymerization of styrene (St) with maleic anhydride (MAh) performed at 22 °C in the presence of dibenzyl trithiocarbonate exhibits controlled nature evidenced by: narrow molecular weight distribution, controlled molecular weight and first-order polymerization kinetics. The composition analysis of the copolymers obtained by ¹³C NMR spectra shows the molar fraction of St in obtained copolymers is almost equal to 0.5 throughout the copolymerization. The sequence structure of the copolymer was obtained from DEPT experiments by recording the spectra at π/4 and 3π/4, and then combining them together, the results showed that the copolymers obtained possessed well-defined alternating structure. The experiment shows that charge-transfer-complex formed from St and MAh participates in both initiation and chain growth throughout the copolymerization.     

Thermal degradation of copolymers of styrene with dicarboxylic acids - II: Copolymers obtained by radical copolymerisation of styrene with maleic acid or fumaric acid

Thermal degradation processes in copolymers of styrene with two stereoisomers of 1,2-ethylenedicarboxylic acids (i.e. maleic acid (the cis-isomer) and fumaric acid (the trans-isomer)) have been studied by mass spectrometry, FTIR and TG measurements. The influence of the chemical composition on thermal degradation of copolymers with acid by non-isothermal thermogravimetric analysis (TG) was also studied. The stereo-configuration of carboxyl groups in copolymers was analysed by potentiometric titration. It was found that copolymers degrade in two main complex stages. The initial step in the decomposition involves the formation of cyclic five-membered anhydrides. The presence of trans configuration of carboxyl groups hinders the formation of cyclic anhydrides and shifts the decomposition to higher temperatures, making decarboxylation competitive. At higher temperatures anhydride decomposition takes place and finally the degradation of main chains occurs.     

马来酸酐与二苄基马来酸酯共存体系的荧光分析法研究

本实验测定了二苄基马来酸酯甲醇溶液的荧光光谱，并发现马来酸酐对该荧光体系有猝灭作用，通过对不同马来酸酐浓度与各种浓度的二苄基马来酸酯甲醇溶液在４００ｎｍ处荧光强度数据的分析，发现马来酸酐的浓度与荧光猝灭程度在一定范围内呈良好的线型关系。据此，提出了用荧光猝灭法对马来酸酐及二苄基马来酸酯的定量分析     

Maleic acid-styrene encapsulated silica cation exchanger in high performance liquid chromatography

The use of poly(maleic acid–styrene)-encapsulated silica for the determination of monovalent and divalent cations is well accepted in ion chromatography. The separation of Mn²⁺, alkali and alkaline earth metal cations is obtained under the same chromatographic conditions. The influences of pH and the concentration of eluent on the retention of cations have been studied. The preparation conditions of packings were studied. The metal ions in the boiler water samples from a thermal power plant were quantitatively determined using this column. The results are in agreement with those determined by ICP and Volumetric analysis methods.     

稀土配位催化马来酸酐-苯乙烯-N-苯基马来酰亚胺三元共聚合

采用稀土配位催化剂研究了马来酸酐、苯乙烯和N 苯基马来酰亚胺的三元共聚合反应 .考察了Al La物质的量的比、不同稀土元素、催化剂浓度、聚合反应时间、单体配比等因素对共聚合反应的影响 .利用核磁、红外、热分析等方法对共聚物进行了初步的表征     

Cure reaction and phase behavior of liquid crystalline epoxides-anhydride systems

A series of novel liquid crystalline epoxides with lateral substituents were cured with anhydrides and the cure kinetics was investigated by non-isothermal DSC technique. The results showed that the lengths of lateral substituents have great effect on the value of Ea. The curing reaction became less active, when the liquid crystalline epoxides have long lateral substituents and were controlled by diffusion at the late stage of cure. A nematic structure was observed by POM and XRD.     

马来酸酐与乙酸乙烯酯交替共聚合反应的研究

本文研究了马来酸酐（MAn）在过氧化苯甲酰（BP）引发作用下与醋酸乙烯酯（VAc）的交替共聚反应。红外光谱证明了交替共聚物的结构，分析结果表明共聚物是由反应单体技1：1摩尔比例组成。当c（BPO）＝6．8×10~（－3）moi／L，c（VAc）＝3．4×10~（－3）mol／L，p（MAn）＝32．7g／L，63～65℃反应18小时，转化率可达92％以上。