| 1. | The above phenomena could be explained from the following reasons : ( 1 ) baso4 particles did n ' t hinder macromolecular single bonded internal rotation
这说明baso _ 4对聚合物大分子的单健内旋转运动阻碍性较小，并不影响聚合物大分子链段运动。 |
| 2. | The non - isothermal crystallization kinetics of acrylamide graft polypropylene ( pp - g - am ) was studied by means of differential scanning calorimetry ( dsc )
Ir谱图证明了am已接枝到pp大分子链上。采用dsc方法研究了pp - g - am的非等温结晶动力学。 |
| 3. | The synthesis and the effect of the molecular structure on the liquid crystalline property were discussed when the mesogenic unit was grafted on the backbone of cellulose and its derivatives
主要包括其合成方法和刚性介晶基元接枝到纤维素及其衍生物大分子链上以后对其液晶性质的影响及可能的理论解释。 |
| 4. | It was found that : ( 1 ) xrd and tem analysis showed that polymer molecules could intercalate into the interlayer of org - mmt , leading to the formation of pp / pp - g - mah / org - mmt intercalation nanocomposites
研究发现： ( 1 ) xrd和tem测试表明，通过熔融插层法，聚合物大分子链已经插层进入蒙脱土片层之间，形成插层型纳米复合材料。 |
| 5. | These microlites and richer amorphous region will benefit the polycondensation reaction of pet , the diffusion of volatile by - products , and the approach of the end - groups of pet molecular chains by forming more routeways , which may result in the higher rate of ssp
作者认为这些更多数量的微晶体有利于固相缩聚过程中副产物小分子的扩散去除及pet大分子链端基的扩散接近，从而在宏观上表现为pet mmt的固相缩聚速率大大提高。 |
| 6. | It was found that : ( 1 ) xrd and tem analysis showed that polymer molecules could insert into org - mmt having been treated by octodecimoalkyl ammonium chloride , and interlayers of org - mmt were dispersed in hope evenly , leading to the formation of hdpe / pe - g - mah / org - mmt nanocomposite
研究发现： ( 1 ) xrd和tem测试表明，采用十八烷基氯化铵改性蒙脱土，通过熔融插层法，聚合物大分子链可以插层进入蒙脱土片层之间，形成剥离型纳米复合材料。 |
| 7. | Structures of the camp fibers were also discussed . the results showed that the hydrogen bonding between the pva and caa damaged the regularity of crystalline field and the crystallinity of the fibers reduced . the cluster structures of each phase in the blend were changed and movement of the molecular chain segment was reduced
对camp纤维结构的研究表明， pva与丙烯酸-丙烯酰胺共聚物( caa )共混后，大分子间的氢键作用破坏了pva晶区结构的规整性，导致pva在camp纤维中的结晶性明显减弱；两种共混组分的聚集态结构发生变化，大分子链段运动受到影响。 |
| 8. | In this thesis , the development of emulsion polymerization theory and related new technologies are comprehensively reviewed , and the synthetic technologies of acrylate latex modified by organosilicon both at home and abroad are also reviewed . based on the current development and research in this field , attentions of this study are focused on three ways for preparing novel acrylate latexes modified by organosilicons , that is , 1 ) the acrylate monomers are copolymerized with unsaturated silicons by emulsion copolymerization ; 2 ) a new latex with microphase separation morphology is synthesized , which shows a core - shell structure character ; 3 ) soap - free polymerization is explored for preparing a higher - performance latex using an unsaturated silicon monomer , different acrylates and a reactive emulsifier . by using techniques of delaying addition of organosilicon monomer and a hydrolysis inhibitor , the hydrolysis and condensation of 3 - ( trimethoxysilyl ) propyl methacrylate during polymerization can be effectively prevented , as a result , organosilicon content in the macromolecular chain is increased
同时采用有机硅单体延迟滴加及添加水解抑制剂等技术，有效防止了-甲基丙烯酰氧基丙基三甲氧基硅烷在乳液聚合过程中的过渡水解及缩合反应，提高了聚合物大分子链中有机硅链节的含量；利用红外光谱与差示扫描量热仪对产物分子结构进行了表征，并通过对共聚产物力学和吸水率的测试，证实了本研究所制备的有机硅改性丙烯酸酯共聚物具有比纯丙烯酸酯聚合物更优良的力学及耐水性能；从分子设计角度出发，利用醇解反应合成出水解、缩合反应速率较慢的两种新型不饱和有机硅单体： ?甲基丙烯酰氧基丙基三乙氧基硅烷和?甲基丙烯酰氧基丙基三异丙氧基硅烷；利用核磁共振对新型硅烷单体结构进行了证实；研究表明利用新型硅烷单体可以制备出高硅烷含量的有机硅改性丙烯酸酯乳液，且其聚合产物具有较高的力学及耐水性能。 |
| 9. | It is the especial congregate structure of polymer matrix that is necessary for the forming of three - dimensional interpenetrate network between the polymer and copper . the mma unites lead to the advantage of improving fiexibity of the film , destroying the formal arrangement of macromolecule chain in polymer and decreasing the degree of crystallization . the ita unites help the solvolyzed copper ion transfer in the film and benefite the forming and establishment of the networks of polymer matrix
聚合物基体特殊的聚集态结构是互穿立体网络形成的必要条件，皿m的加入有利于破坏丙烯睹大分子链的规整性，使结晶度降低，提高聚合物的柔韧性，含亲水基团的单体（ ita 、 as ）存在有利于降低离子迁移的界面能，提供溶剂化铜离子迁移的途径以及聚合物基体网络结构的形成和稳定。 |
| 10. | This was due to three reasons : ( 1 ) baso4 particles were rigid inorganic particles , which could hinder the retraction of polymer molecules and decreased the elasticity . ( 2 ) a bad compatibility between baso4 and tpu , small interface adhesive force and the phase interface ready to separate . ( 3 ) during high content of baso4 , the tenacity of filament mainly depended on tpu , so that the strength decreased with the content of tpu in filament down
这是因为： baso _ 4属于刚性粒子，阻碍tpu大分子链的回缩，降低了纤维的弹性； baso _ 4与tpu相容性极差，共混时容易形成相界面，界面结合力小，受外力作用时相与相间容易发生分离，使纤维的力学性能下降； baso _ 4在高含量下，纤维强度主要由聚合物的力学性能决定，随着baso4含量的增加， tpu所占比例下降，从而在宏观上表现出纤维的力学性能下降。 |
