However , because of the easily delocalized n electrons , they have more significantly different optical properties than common polymers , such as large third - order nonlinear optical susceptibilities , ultrafast optical response time , good chemical and thermal stabilities . the material properties can be improved through the modification of the backbone and side chain thanks to their easily being cut out 例如较大的非线性系数、较快的光学响应速度、良好的化学和热稳定性；并且结构易于剪裁，可以通过分子设计改变主链或侧链的结构来优化材料的性能；其原料价格低，易于大量制取。
Upholding the principle of " optimizing an overall design , seeking major breakthrough , working around value added main chain and integrating gradually systems , " the paper outlines that supply chain management concept is to be executed in full and using e - business as the means . sophisticated production , 坚持“优化总体设计、寻求重点突破、围绕增值主链、逐步系统集成”的方针，全面贯彻供应链管理思想，利用电子商务手段，逐步集成生产先进过程控制系统、营销敏捷集约管理系统、资源优化配置系统和经营决策信息支持系统，使供应链管理理念和方法成为现实生产力。
In this paper , we make use of hexadesyltrimethyl , an approximate ammonium compounding ( 15 - ch2 - number 17 ) , ocatadecylaminechloried as cation exchange agents . the montorillonite is treated with these agents , which results in marked increase in their organophilic properties . the orgnic - montmorillonite has been identified by x - ray diffraction , different thermal analysis and infrared adsorption spectra 在本文中，我们分别用十六烷基三甲基溴化铵、一种混铵盐（ 15主链- ch2 -数量17 ）和十八烷基氯化铵作为阳离子交换剂，对蒙脱土进行了改性，使之由亲水性变成亲油性，继而采用熔融插层方法制备了聚乙烯/蒙脱土复合材料。
Main methods and results are as followed : 1 epitope analysis of agonist - binding region of nrla physicochemical properties and antigenicity of two agonist - binding regions of nrla were analyzed through bioinformatics : domain p1 containing 151 amino acid residues preceding the first transmembrane domain of the human nrla , domain p2 with 144 residues following the third transmembrane domain . four parameters including hopp - woods and kyte hydrophilicityjanin accessibility , karplus - schulz flexibility , and welling antigenicity were used to determine the antigenic sites , and prosite programme and chou - fasman method were employed to analyze their related sequence motif and the secondary structures 用goldkey软件分别选取公认的hopp等与kyte等亲水性参数、 jain表面可及性参数、 karplus - schulz主链柔韧性参数及welling抗原性参数对p1 、 p2两个多肽片段进行参数分析。并采用通用的prosite程序与chou - fasman方法比较分析p1 、 p2多肽片段的氨基酸位点与二级结构特征。综合判定两个多肽片段的抗原性及其位点，结果认为p2抗原性强于p1 。
As to the high - density polyethylene , two strategies were performed : ( 1 ) after being modified by grafting polar groups on its backbone , polyethylene and organic montmorillonite were melt mixed directly , which could obtain the polyethylene / montmorillonite nanocomposites . the effect of groups grafted on the backbone on the efficiency of intercalation was investigated in this paper ; ( 2 ) choosing the grafters obtained in this experiment as the compatilizers , polyethylene / montmorillonite nanocomposites had also been prepared by melt mixing the polyethylene , grafter and organic montmorillonite . the difference of grafters and sequence of mixing on the intercalation result had also been analyzed 对于高密度聚乙烯，采用以下两种思路进行： ( 1 )对聚乙烯首先进行功能化改性，使聚乙烯分子链上接枝上不同的极性基团，将改性后的聚乙烯再同有机蒙脱土直接熔融复合，成功的制备了聚乙烯蒙脱土纳米复合材料，并考察了接枝到聚乙烯主链上基团的不同对最终插层效果的影响； ( 2 )选用制得的接枝物作为相容剂，将聚乙烯，接枝物，有机蒙脱土三者熔融复合，也可以得到聚乙烯蒙脱土纳米复合材料，并对选用不同的接枝物作为相容剂以及复合顺序对最终插层效果的影响加以分析。
The result of analysis indicated that hpa was few divarication structure , and the ( 1 - 4 ) glc were the corn structure of the main chain , and ( 1 - 4 ) glc had a divarication at the point of 0 - 3 , there was a divarication in every eight unit , the divarication was made of single deoxidized glc , and its repeat units were possiblely : hpb was also few divarication structure , and the a - ( l - 4 ) glc were the com structure of the main chain , ( 1 - 4 ) glc had a divarication at the point of 0 - 3 , there was a divarication in every seven unit , the divarication was made of non - single deoxidized glc , and its repeat units were possiblely : g represents deformity of glucose valueofnl : 317 value of n2 : 251 分析结果表明： hpa为少分枝结构：其中( 1 4 ) glc构成主链的核心结构； ( 1 4 ) glc在3 - 0处有分枝，平均每8个己糖残基有1个分枝；支链部分由单一非还原端glc构成；其重复单位可能为： hpb为少分枝结构；其中( 1 4 ) glc构成主链的核心结构； ( 1 4 ) glc在0 - 3处有分枝，平均每7个己糖残基有1个分枝；支链部分由单一非还原端glc构成；其重复结构单位可能为： g代表葡萄糖残基n1值为： 317n2值为： 251
Side chain polyurethanes with azo group are characterized and confirmed by ftir , uv - vis , dsc , vpo , z - scan , polarize microscope . the results show that the end - group and the flexibility of main chain affects the growing up of liquid crystalline phase greatly . because the determinable way of detection is defective , it was not founded the liquid crystalline behavior obviously contributes to the non1inear optical thection 最后，在分析讨论实验结果的基础上，指出侧链型聚氨酯液晶中侧链介晶基元的末端基团及主链的柔性对其液晶态的形成有重要影响；由于检测手段的不齐备，未能观察到熔致型聚氨酯液晶的液晶行为对其非线性光学效应的贡献作用。
As the tender part of polymer molecule , the poly ( propylene glycol ) ( ppg ) was studied . the result suggested that prepolymer which was prepared with the ppg ( molecular weight is 1000 ) has good capability . it ' s uv - curing velocity is 35m / min , glossiness is 139 . 3 % , tensibility is 23 . 88 % and tensile strength is 4 . 475mpa 对作为预聚物高分子主链柔性部分的聚醚进行的研究表明，采用分子量为1000的聚醚合成的预聚物， uv固化速度达到35m min 、固化后涂膜光泽度139 . 3 、涂膜断裂伸长率23 . 88 、拉伸强度4 . 475mpa ，综合性能优良。
