【摘 要】
：
A novel star-comb polybutadiene(SC-PB) was synthesized with n-butyllithium(n-BuLi) as initiator,epoxidized star liquid polybutadiene(ESPB) as coupling agent,cyc
【出 处】
：
Chinese Chemical Letters
论文部分内容阅读
A novel star-comb polybutadiene(SC-PB) was synthesized with n-butyllithium(n-BuLi) as initiator,epoxidized star liquid polybutadiene(ESPB) as coupling agent,cyclohexane as solvent by living anionic polymerization and grafting-onto technology. The SC-PB was subsequently hydrogenated by homogeneous catalysis(catalytic hydrogenation using nickel naphthenate/ triisobutyl aluminum),to transform the SC-PB into the corresponding star-comb poly(ethylene-co-butene)(SC-PEB).The SC-PB was characterized by SEC-TALLS,~1H NMR,DSC and WAXD techniques.The hydrogenation degree and crystallinity degree of SC-PEB were also determined.
A novel star-comb polybutadiene (SC-PB) was synthesized with n-butyllithium (n-BuLi) as initiator, epoxidized star liquid polybutadiene (ESPB) as coupling agent, cyclohexane as solvent by living anionic polymerization and grafting-onto technology. SC-PB was followed by hydrogenated by homogeneous catalysis (catalytic hydrogenation using nickel naphthenate / triisobutyl aluminum), to transform the SC-PB into the corresponding star-comb poly was characterized by SEC-TALLS, ~ 1H NMR, DSC and WAXD techniques. The hydrogenation degree and crystallinity degree of SC-PEB were also determined.
其他文献
无可否认,数码作为当今这个时代的主旋律,正迅速地改变着人们的生活,正如近年来我们在市场上常常见到的各种形形色色的半导体存储产品,它们以体积小、容量大、可靠性高、通用
今年1月10日以来,我国南方大部分地区出现了罕见的持续雨雪和低温冰冻极端天气,波及21个省、自治
Since January 10 this year, most of southern China there has been a r
不久前,程小姐在搭乘地铁期间碰到一件让她无法理解的事情:一名男孩索要她手上的蛋卷不成,居然直接动手抢,而他的家长不仅没有制止,反而还让孩子吃完了再要.rn当天下午6点钟
我们这里过去对杨树修枝有强度太大的倾向。有人说什么“穷杨富柳”,意思就是说杨树的树头应该修的小,这样树杆直、拔高快。这种说法有没有科学根据?生产上用不用?为了解决这
很多人周末的口号是“只要睡不死，就往死里睡”。确实嘛，经过了一周的学习，周六的早上奖励自己，赖一赖床，似乎也不错。不过，有的时候当你睡完懒觉起床，却感到光线刺得双眼疼痛，四肢像灌了铅一样沉重，头脑也不清醒，甚至会有些头疼。于是你就纳闷了：怎么睡个懒觉也不行呢？难道我命中注定是一个勤奋的人吗？ 棉花糖要打击你了：呵呵，并不是。其实，这种睡眠过度的感觉和宿醉非常相似，因此科学家们也把它称为“睡醉”。
徽商商业教育不仅对传统的师徒制进行了延伸和拓展,还出现了大量商业书,改变了商业教育的形式,也使商业教育凸显出从教者文化基础宽厚、注重综合职业能力培养、加强创业教育
Objective: To evaluate the development of refraction, expressed as spherical equivalents, in prematurely born children during the first 10 years of life. Method
我8岁的时候,跟着父亲一起去出差.我们入住一家很好的旅馆,然后在旅馆享受了一顿好吃的自助餐.rn我取回一些圆圆的菠萝切片放到餐桌上.这是我第一次看到这种切法的菠萝片.在
In this work,the formation sites,helical parameters and hydrogen bond positions of Konjac glucomannan molecular helices were investigated using molecular dynami
你知道水晶泥是什么吗？水晶泥是一种用于室内种植和家庭装饰的新高科技产品，经过充分浸泡后能吸收100倍左右的水分。在查阅了大量资料后我发现，水晶泥不仅含有镁、锌、钛等元素，而且其主要成分为亲水性树脂，无论是皮肤接触还是吸入其发挥性物质，都可对儿童健康造成危害。 为了让大家了解水晶泥的危害性。我们就以水晶泥作为培养基来做个实验，探究它对生物种子的生长影响。 实验材料和工具 水晶泥、蒸馏水、饱满的