Heterogeneity in nanocomposite hydrogels from poly(ethylene oxide) cross-linked with silicate nanoparticles

Patrick Schexnailder; Elena Loizou; Lionel Porcar

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Heterogeneity in nanocomposite hydrogels from poly(ethylene oxide) cross-linked with silicate nanoparticles

机译：聚（环氧乙烷）与硅酸盐纳米粒子交联的纳米复合水凝胶的非均质性

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We investigate the influence of ionic strength on the structural heterogeneity and viscoelastic properties of nanocomposite hydrogels. We use small-angle scattering and rheology to monitor structural changes as a function of ionic strength. Increasing ionic strength makes the nanocomposite gels macroscopically heterogeneous, stiffer and more turbid. At high shear rates, nanometre structures rearrange within aggregates and orient in the flow direction. The changing structural properties that develop with ionic strength are due to increased heterogeneity of nanoparticle distribution and polymer-nanoparticle interactions as well as to the formation of PEO [poly(ethylene oxide)] aggregates interacting with sodium cations, which reinforce the overall hydrogel network.

机译：我们研究离子强度对纳米复合水凝胶的结构异质性和粘弹性的影响。我们使用小角度散射和流变学来监测结构变化与离子强度的关系。离子强度的增加使纳米复合凝胶宏观上不均匀，更硬且更混浊。在高剪切速率下，纳米结构在聚集体内重新排列并沿流动方向定向。随离子强度而变化的结构特性是由于纳米颗粒分布和聚合物-纳米颗粒相互作用的不均匀性增加，以及与钠阳离子相互作用的PEO [聚（环氧乙烷）]聚集体的形成，从而增强了整个水凝胶网络。

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《Physical chemistry chemical physics: PCCP》 |2009年第15期|共7页
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Patrick Schexnailder; Elena Loizou; Lionel Porcar;
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1. Heterogeneity in nanocomposite hydrogels from poly(ethylene oxide) cross-linked with silicate nanoparticles [J] . Patrick Schexnailder, Elena Loizou, Lionel Porcar Physical chemistry chemical physics: PCCP . 2009,第15期

机译：聚（环氧乙烷）与硅酸盐纳米粒子交联的纳米复合水凝胶的非均质性
2. Polymer-layered silicate nanocomposites. 1. A study of poly(ethylene oxide)/Na+-montmorillonite nanocomposites as polyelectrolytes and polyethylene-block-poly(ethylene glycol) copolymer/Na+-montmorillonite nanocomposites as fillers for reinforcement [J] . Liao B., Liang HJ., Pang YX., Polymer: The International Journal for the Science and Technology of Polymers . 2001,第25期

机译：聚合物层状硅酸盐纳米复合材料。 1.聚（环氧乙烷）/ Na +-蒙脱土纳米复合材料作为聚电解质和聚乙烯嵌段-聚（乙二醇）共聚物/ Na +-蒙脱土纳米复合材料作为增强材料的研究
3. Robust and Adhesive Hydrogels from Cross-Linked Poly(ethylene glycol) and Silicate for Biomedical Use~a [J] . Chia-Jung Wu, Jonathan J. Wilker, Gudrun Schmidt Macromolecular bioscience . 2013,第1期

机译：生物医学用交联聚乙二醇和硅酸盐的坚固而有粘性的水凝胶〜a
4. SUPRAMOLECULAR HYDROGELS FORMED BY α-CYCLODEXTRIN AND POLY(ETHYLENE OXIDE)-b-POLY(R)3-HYDROXYBUTYRATE-b-POLY(ETHYLENE OXIDE) TRIBLOCK COPOLYMERS FOR CONTROLLED DRUG DELIVERY [C] . Jun Li, Xu Li, Xiping Ni, Proceedings of the 29th Annual Meeting of the Controlled Release Society . 2002

机译：由α-环糊精和聚（环氧乙烷）-b-聚（R）3-羟基丁酸酯 -b-聚环氧乙烷三嵌段共聚物构成的超分子水可控制药物的输送
5. Synthesis and Characterization of Silicate Ester Prodrugs and Poly(ethylene glycol)-b-poly(lactic-co-glycolic acid) Block Copolymers for Formulation into Prodrug-Loaded Nanoparticles. [D] . Wohl, Adam Richard. 2012

机译：硅酸酯酯前药和聚（乙二醇）-b-聚（乳酸-共-乙醇酸）嵌段共聚物的合成和表征，用于配制成载有前药的纳米颗粒。
6. Analysis of residual crosslinking agent content in UV cross-linked poly(ethylene oxide) hydrogels for dermatological application by gas chromatography [O] . Rachel Shet Hui Wong, Mark Ashton, Kalliopi Dodou 2016

机译：气相色谱法分析皮肤病学应用中的紫外线交联聚环氧乙烷水凝胶中残留的交联剂含量
7. Cross-Linked Composite Gel Polymer Electrolyte Based on an H-Shaped Poly(ethylene oxide)–Poly(propylene oxide) Tetrablock Copolymer with SiO2 Nanoparticles for Solid-State Supercapacitor Applications [O] . Sohee Kim, Ji Hee Kim, Jae Hee Han, 2021

机译：基于H形聚（环氧乙烷）-poly（环氧丙烷）四聚锁共聚物的交联复合凝胶聚合物电解质与SiO2纳米粒子用于固态超级电容器应用

Heterogeneity in nanocomposite hydrogels from poly(ethylene oxide) cross-linked with silicate nanoparticles

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