微波合成均分散高分子微球及其机理

来源 :物理化学学报 | 被引量 : 0次 | 上传用户:chouchouzhuzhu
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Polymerization of styrene and methylmethacrylate was conducted in the presence of seeds and microwave irradiation. The particles were characterized by laser light scattering and transmission electron microscopy. Making comparison between two kinds of microsphere formation processes, we have obtained some information on the mechanism of the particle formation. For polystyrene the process was mainly conducted on the seeds. However, for polymethylmacrylate at the lower concentration range, the process was mainly conducted in the solution, in contrary, at higher concentration, it occured mainly on the seeds. Polymerization of styrene and methylmethacrylate was conducted in the presence of seeds and microwave irradiation. The particles were characterized by laser light scattering and transmission electron microscopy. Making comparison between two kinds of microsphere formation processes, we have obtained some information on the mechanism of the particle For polystyrene the process was mainly conducted on the seeds. However, for polymethylmacrylate at the lower concentration range, the process was mainly conducted in the solution, in contrary, at higher concentration, it occured mainly on the seeds.
其他文献
“我既然选择了当医生这一职业,我就应该把自己的一切奉献给这一崇高的事业。”1981年,张启平在山东省泰安卫校中医班毕业,被分配到宁阳县第一人民医院中医科工作。20多年来
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊
坦白说,昕锐的试驾稿并不好写,这一级别的车型注重性价比,追求各方面的平衡性,这意味着它要照顾到驾乘人员的舒适性、燃油经济性,势必要牺牲一部分的操控性和个性,也意味着想
亲爱的琴童小朋友,大家好!正在学琴的你,想测测自己的音乐知识储备量吗?那就快快参与本栏目的测试吧!本刊每期都会准备10道音乐知识题,等待你的作答。你可以将答案写在本刊的
2003年元月27日,湖北省卫生厅公布了第一周期省级临床重点专科名单,全省仅有的44个省级临床重点专科,襄樊市中心医院就囊括了其中的7个。这7个重点专科是心胸外科、泌尿外科
编者按:随着美术新课程改革不断走向深入,特别在新课标的实验过程中,通过广大美术教师和美术教育研究者的积极实践与深入研究,在美术教学的目标、内容、模式、方法、评价等方
1.合理轮作,应因地制宜选用优良抗病品种,种子播前要进行浸种处理,可用50%多菌灵可湿性粉剂500倍液加新高脂膜800倍液浸种20分钟,后用清水冲净后催芽。播种后及时喷施新高脂
器材编辑刘东:在物联网时代,防尘塞的应用前途无量。想想在不远的将来,回到家里,可以一键开门,一键打开电视,是不是很方便呢。乔布斯取消了大部分智能手机按键,让手机变得整
将3-(2,3-环氧丙基氧)丙基三甲氧基硅烷与经酸处理过的硅胶反应,制得3-(2,3-环氧丙基氧)丙基硅胶,每克硅胶上含3-(2,3-环氧丙基氧)丙基1.32mmol.以3-(2,3-环氧丙基氧)硅胶为载体进行了脂肪酶的固定化,在固定化反应中,反应液
周友金是上世纪八十年代至九十年代前期活跃在我国民族声乐舞台的著名男高音歌唱家,他的演唱特色极为明显:音色清澈明亮,却毫无柔弱、单薄之感,音域宽广音色却圆润统一,歌声