{"title":"非偏振光诱导含聚二甲基硅氧烷的偶氮苯液晶嵌段共聚物薄膜微相分离结构的垂直取向。 Perpendicular Orientation of Polydimethylsiloxane Nanocylinders in Thin Film of a Liquid Crystalline Block Copolymer Induced by Unpolarized Light","authors":"李玉洁,罗龙飞,沈志豪,范星河,郑世军","doi":"10.11777/j.issn1000-3304.2021.21158","DOIUrl":"https://doi.org/10.11777/j.issn1000-3304.2021.21158","url":null,"abstract":"通过原子转移自由基聚合(ATRP)合成了聚二甲基硅氧烷-嵌段-聚(11-(4-(4'-氰基偶氮苯)苯氧基)十一烷基丙烯酸酯)(PDMS- b-PAz)的二嵌段共聚物，其中PDMS的体积分数是27%. 利用原子力显微镜和掠入射小角X射线散射等表征手段研究了不同厚度的薄膜分别在热退火和非偏振光取向后的组装形貌. 结果显示：热退火时，当膜厚较低时，形成的是面内无序排列的柱状结构；而当膜厚增加到319 nm时，形成的是面内排列与垂直于基底排列共存的杂化结构，即使当膜厚增加至406 nm时，这种杂化结构仍然保持. 而采用非偏振光取向时，即使对于厚度仅为55 nm的薄膜就能获得垂直于基底排列的微相分离结构，且当膜厚增加至406 nm时，这种结构仍然得到保持. 这是首次利用非偏振光诱导含PDMS的嵌段共聚物薄膜取向得到PDMS纳米柱垂直于基底的排列，这一取向方法将有助于推动含PDMS的嵌段共聚物薄膜在纳米模板等领域中的应用.","PeriodicalId":501105,"journal":{"name":"高分子学报","volume":"40 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138496841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"同步辐射硬X射线散射表征高分子材料：原位装置的研制和应用。 Characterization of Polymer Materials by Synchrotron Radiation Hard X-ray Scattering Technology: The Development and Application of in situ Instruments","authors":"赵景云,昱万程,陈威,陈鑫,盛俊芳,李良彬","doi":"10.11777/j.issn1000-3304.2021.21111","DOIUrl":"https://doi.org/10.11777/j.issn1000-3304.2021.21111","url":null,"abstract":"同步辐射硬X射线散射技术是表征高分子材料晶体结构和其他有序结构的有力手段. 高时空分辨的现代同步辐射光源具备强大的实时、原位、动态和无损表征能力，在高分子材料加工和服役过程中远离平衡态的多尺度结构演变研究方面有着巨大优势. 为了充分发挥这一优势，合理设计同步辐射原位研究装置，实现原位实验过程中的样品环境控制十分关键. 本文通过结合具体的研究案例，首先介绍同步辐射原位实验的设计、原位研究装置的研制、操作技巧和数据处理等整个在线实验流程，帮助读者建立对同步辐射原位实验的基本认识. 最后，选择了若干具有代表性的高分子材料体系和样品环境，简要概述同步辐射硬X射线散射技术在表征复杂加工外场作用下高分子材料多尺度结构演变方面的应用，帮助读者加深对同步辐射原位研究装置及相关实验过程的理解，以期引发读者的思考，积极拓展同步辐射硬X射线散射技术在高分子材料表征中的应用.","PeriodicalId":501105,"journal":{"name":"高分子学报","volume":"40 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138496839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"α-二亚胺镍钯配合物合成及催化混合癸烯低聚研究。 Synthesis and Catalytic Performance of α-Diimine Nickel and Palladium Complexes for Oligomerization of Decene Mixture","authors":"阮晶晶 ,郑涵斗,蒋岩,王力搏,王斯晗,高海洋","doi":"10.11777/j.issn1000-3304.2021.21147","DOIUrl":"https://doi.org/10.11777/j.issn1000-3304.2021.21147","url":null,"abstract":"α-二亚胺镍钯催化剂具有独特的链行走的特点，通过对催化剂结构设计可以进一步调控其催化性能和链行走过程来制备性能优异的聚烯烃产品. 本文合成和表征了莰基骨架的 α-二亚胺镍钯配合物，并研究了其在一氯二乙基铝的助催化作用下催化混合癸烯低聚性能. 详细探究了催化剂金属中心、溶剂、温度及铝镍比对混合癸烯低聚结果的影响. 钯催化剂催化混合癸烯低聚时几乎无活性；而镍催化剂具有较好的催化活性，结合单体的异构化过程线性的单体几乎能完全低聚转化. 所得到的产物是高度支化、低分子量的油状聚烯烃产物，并且具有高的黏度指数(>170)，低的倾点(<-30 ℃)，在润滑油基础油领域具有良好应用前景.","PeriodicalId":501105,"journal":{"name":"高分子学报","volume":"39 27","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138496843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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