单链超内环化聚合物与线性高分子共混物的黏弹性研究
发布时间：2018-11-25 10:17
【摘要】：针对传统多乙烯基单体聚合存在过程不可控,凝胶点低等问题,提出了利用动力学控制的零价铜调控可控/活性自由基聚合方法来可控均聚双乙烯基单体二甲基丙烯酸乙二醇酯(EGDMA).研究其聚合动力学发现在聚合前期呈线性增长,且分散性指数小于1.35,而其对应的侧乙烯基单元转化率却高达28%,说明该聚合物具有新型的单链超内环化结构.将该产物作为单链聚合物纳米颗粒与线性聚甲基丙烯酸甲酯(PMMA)共混后,研究发现其黏度随纳米颗粒质量分数的增加而下降,并非Einstein模型预测的随添加颗粒的浓度增加而增加.该单链超内环化聚合物纳米颗粒具有原料方便易得,聚合过程简单高效,聚合物结构(如分子量、分子量分布、成环数目等)可控等优点.
[Abstract]:The traditional polyvinyl monomer polymerization has some problems, such as the process is not controllable and the gel point is low. A controllable / active radical polymerization method controlled by zero-valent copper was proposed to control the homopolymer divinyl glycol dimethacrylate (EGDMA). It was found that the polymerization kinetics of the polymer increased linearly at the early stage of polymerization, and the dispersion index was less than 1.35, but the conversion rate of the side vinyl unit was as high as 28%, which indicated that the polymer had a new single-chain super-inner ring structure. When the product was blended with linear poly (methyl methacrylate) (PMMA) as single chain polymer nanoparticles, it was found that the viscosity decreased with the increase of the mass fraction of the nanoparticles. It was not predicted by Einstein model and increased with the increase of the concentration of added particles. The single chain super inner cyclic polymer nanoparticles have the advantages of easy to obtain raw materials, simple and efficient polymerization process, controllable polymer structure (such as molecular weight, molecular weight distribution, number of rings) and so on.
【作者单位】： 天津大学材料科学与工程学院;Charles
【基金】：国家自然科学基金(基金号51573129) 国家留学基金(基金号留金发[2015]3074)资助项目
【分类号】：O631.21
本文编号：2355742
[Abstract]:The traditional polyvinyl monomer polymerization has some problems, such as the process is not controllable and the gel point is low. A controllable / active radical polymerization method controlled by zero-valent copper was proposed to control the homopolymer divinyl glycol dimethacrylate (EGDMA). It was found that the polymerization kinetics of the polymer increased linearly at the early stage of polymerization, and the dispersion index was less than 1.35, but the conversion rate of the side vinyl unit was as high as 28%, which indicated that the polymer had a new single-chain super-inner ring structure. When the product was blended with linear poly (methyl methacrylate) (PMMA) as single chain polymer nanoparticles, it was found that the viscosity decreased with the increase of the mass fraction of the nanoparticles. It was not predicted by Einstein model and increased with the increase of the concentration of added particles. The single chain super inner cyclic polymer nanoparticles have the advantages of easy to obtain raw materials, simple and efficient polymerization process, controllable polymer structure (such as molecular weight, molecular weight distribution, number of rings) and so on.
【作者单位】： 天津大学材料科学与工程学院;Charles
【基金】：国家自然科学基金(基金号51573129) 国家留学基金(基金号留金发[2015]3074)资助项目
【分类号】：O631.21
【相似文献】
相关期刊论文 前9条
1 蒋德彰;;环化聚合反应[J];化学通报;1962年03期
2 张鸿志,曹维孝,冯新德;环化聚合反应机构的研究[J];高分子通讯;1964年01期
3 冯新德;洪啸吟;;负离子环化聚合的研究[J];科学通报;1966年04期
4 傅凌子;泮晓芳;李斌;李文清;胡自强;来国桥;;含硅十六元大环线性环化聚合物的控制合成及表征[J];杭州师范大学学报(自然科学版);2013年06期
5 冯新德,张鸿志,曹维孝;环化聚合的研究——聚合温度对甲基丙烯酸酐聚合反应机构的影响[J];高分子通讯;1965年02期
6 高党鸽;马建中;吕斌;王延东;;DMDAAC在蒙脱土中插层环化聚合及其应用的研究[J];高分子材料科学与工程;2006年06期
7 张鸿志,冯汉保,冯新德;α,α′-二氯代二丙烯基二甲基硅烷的合成及环化聚合[J];高分子通讯;1964年06期
8 蒋德彰,包兴林,孙国祥,冯新德;2-丙烯酰氧基丙烯酸酯的合成及其环化聚合[J];高分子通讯;1965年01期
9 ;[J];;年期
相关博士学位论文 前1条
1 宋卫;易位环化聚合新方法和易位聚合物性能研究[D];华东师范大学;2015年
相关硕士学位论文 前1条
1 李斌;基于硅原子的Thorpe-Ingold效应环化聚合物的设计合成及表征[D];杭州师范大学;2013年
，本文编号：2355742
本文链接：https://www.wllwen.com/kejilunwen/huaxue/2355742.html
教材专著
