当前位置: X-MOL 学术Eur. Polym. J. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Absolute characteristics and conformation of cationic polymers by hydrodynamic approaches: Poly(AEMA- co -MAEMA- co -DMAEMA) stat copolymers
European Polymer Journal ( IF 6 ) Pub Date : 2017-12-01 , DOI: 10.1016/j.eurpolymj.2017.10.024
Igor Perevyazko , Anne-K. Trützschler , Alexander Gubarev , Elena Lebedeva , Anja Traeger , Nikolay Tsvetkov , Ulrich S. Schubert

Abstract Сationic poly((2-aminoethyl)-methacrylate–co-N-methyl-(2-aminoethyl)-methacrylate-co-N,N-dimethyl-(2-aminoethyl)-methacrylate) copolymers were synthesized by reversible addition-fragmentation chain transfer polymerization in a wide range of molar masses 16 , 000 M , g mol - 1 130 , 000 and narrow dispersities. The copolymers were investigated by a wide range of characterization techniques such as sedimentation velocity, intrinsic viscosity, translation diffusion, asymmetric flow field-flow fractionation, as well as standard SEC and NMR analysis. As a result a matrix of self-consistent parametric macromolecular characteristics and the absolute molar masses were obtained. Consistent Kuhn-Mark-Houwink-Sakurada scaling relationships were found for 0.2 M NaCl water ( [ η ] = 0.002 × M 0.85 , s 0 = 0.0231 × M 0.41 , D 0 = 2 , 349 × M - 0.59 ) and 0.2 M NaOH water ( [ η ] = 0.022 × M 0.50 ) solvent system. The corresponding conformational characteristics of the macromolecules, that define the polymer behavior in solution – equilibrium rigidity and diameter of the polymer chain, were determined to be A = 4.3 nm and A = 1.1 nm for 0.2 M NaCl and 0.2 M NaOH respectively. Additionally, the anisotropic optical properties were studied by the flow birefringence revealing information about optical anisotropy of the monomer unit ( Δ a = - 1.5 × 10 - 25 cm 3 ). The presented study exemplifies the in-depth analytical characterization of cationic/charge polymers by the fundamental hydrodynamic approaches resolving the essential macromolecular characteristics and solution behavior.

中文翻译:

通过流体动力学方法获得的阳离子聚合物的绝对特性和构象:Poly(AEMA-co -MAEMA-co -DMAEMA) stat 共聚物

摘要 阳离子聚((2-氨基乙基)-甲基丙烯酸酯-co-N-甲基-(2-氨基乙基)-甲基丙烯酸酯-co-N,N-二甲基-(2-氨基乙基)-甲基丙烯酸酯)共聚物通过可逆加成-断裂合成链转移聚合在广泛的摩尔质量 16, 000 M , g mol - 1 130, 000 和窄分散度。通过广泛的表征技术对共聚物进行了研究,例如沉降速度、特性粘度、平移扩散、不对称流场-流动分级以及标准 SEC 和 NMR 分析。结果,获得了自洽参数大分子特性和绝对摩尔质量的矩阵。对于 0.2 M NaCl 水,发现了一致的 Kuhn-Mark-Houwink-Sakurada 比例关系([ η ] = 0.002 × M 0.85 , s 0 = 0.0231 × M 0.41 , D 0 = 2 , 349 × M - 0。59 ) 和 0.2 M NaOH 水 ([ η ] = 0.022 × M 0.50 ) 溶剂系统。大分子的相应构象特征定义了溶液中的聚合物行为 - 平衡刚度和聚合物链的直径,对于 0.2 M NaCl 和 0.2 M NaOH,分别确定为 A = 4.3 nm 和 A = 1.1 nm。此外,通过流动双折射研究了各向异性光学特性,揭示了有关单体单元光学各向异性的信息 (Δ a = - 1.5 × 10 - 25 cm 3 )。所提出的研究通过解决基本大分子特性和溶液行为的基本流体动力学方法,举例说明了阳离子/电荷聚合物的深入分析表征。大分子的相应构象特征定义了溶液中的聚合物行为 - 平衡刚度和聚合物链的直径,对于 0.2 M NaCl 和 0.2 M NaOH,分别确定为 A = 4.3 nm 和 A = 1.1 nm。此外,通过流动双折射研究了各向异性光学特性,揭示了有关单体单元光学各向异性的信息 (Δ a = - 1.5 × 10 - 25 cm 3 )。所提出的研究通过解决基本大分子特性和溶液行为的基本流体动力学方法,举例说明了阳离子/电荷聚合物的深入分析表征。大分子的相应构象特征定义了溶液中的聚合物行为 - 平衡刚度和聚合物链的直径,对于 0.2 M NaCl 和 0.2 M NaOH,分别确定为 A = 4.3 nm 和 A = 1.1 nm。此外,通过流动双折射研究了各向异性光学特性,揭示了有关单体单元光学各向异性的信息 (Δ a = - 1.5 × 10 - 25 cm 3 )。所提出的研究通过解决基本大分子特性和溶液行为的基本流体动力学方法,举例说明了阳离子/电荷聚合物的深入分析表征。分别为 2 M NaCl 和 0.2 M NaOH。此外,通过流动双折射研究了各向异性光学特性,揭示了有关单体单元光学各向异性的信息 (Δ a = - 1.5 × 10 - 25 cm 3 )。所提出的研究通过解决基本大分子特性和溶液行为的基本流体动力学方法,举例说明了阳离子/电荷聚合物的深入分析表征。分别为 2 M NaCl 和 0.2 M NaOH。此外,通过流动双折射研究了各向异性光学特性,揭示了有关单体单元光学各向异性的信息 (Δ a = - 1.5 × 10 - 25 cm 3 )。所提出的研究通过解决基本大分子特性和溶液行为的基本流体动力学方法,举例说明了阳离子/电荷聚合物的深入分析表征。
更新日期:2017-12-01
down
wechat
bug