Small‐Angle X‐Ray Scattering Measurements on Amphiphilic Polymer Conetworks Swollen in Orthogonal Solvents,Macromolecular Chemistry and Physics

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Small‐Angle X‐Ray Scattering Measurements on Amphiphilic Polymer Conetworks Swollen in Orthogonal Solvents
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2020-11-23 , DOI: 10.1002/macp.202000292
Lena Benski ₁ , Ismail Viran ₁ , Frank Katzenberg ₁ , Joerg C. Tiller ₁

Affiliation

Amphiphilic polymer conetworks (APCNs), which combine two different polymer nanophases, have a broad range of applications that involve their unique potential to separately swell one of these nanophases in a selective solvent. Little is known about the structural changes of such APCNs upon swelling in dependence on the topology. Here, conetworks composed of poly(2‐ethylhexyl acrylate) crosslinked by poly(2‐methyl‐2‐oxazoline) (PMOx) are investigated with small‐angle X‐ray scattering in dry and swollen state using the orthogonal solvents water and toluene. The data clearly show that the structural changes induced by swelling are strongly dependent on the topology of the APCNs. While water leads to fusion of PMOx phases resulting in larger structures than found in the dry APCN, toluene is only swelling the hydrophobic phases without structural changes.

中文翻译：

在正交溶剂中溶胀的两亲聚合物共网络的小角度X射线散射测量

结合了两种不同的聚合物纳米相的两亲聚合物共网络（APCN）具有广泛的应用范围，涉及其独特的潜力，可以将这些纳米相之一在选择性溶剂中分别溶胀。对于此类APCN的结构变化（取决于拓扑）知之甚少。在这里，使用正交溶剂水和甲苯，在干燥和溶胀状态下，通过小角度X射线散射研究了由聚（2-甲基-2-恶唑啉）（PMOx）交联的聚（丙烯酸2-乙基己酯）组成的共网络。数据清楚地表明，由膨胀引起的结构变化在很大程度上取决于APCN的拓扑。尽管水导致PMOx相融合，导致结构比干燥的APCN大，

更新日期：2021-01-07

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