聚丙烯酸酯

Preparation and characterization of inorganic–organic trilayer core–shell polysilsesquioxane/polyacrylate/polydimethylsiloxane hybrid latex particles

ty10086 提交于 周四, 08/26/2021 - 13:39
Abstract(#br)The inorganic–organic trilayer core–shell polysilsesquioxane/polyacrylate/polydimethylsiloxane hybrid latex particles have been successfully prepared via seeded emulsion polymerization of acrylate monomers and octamethylcyclotetrasiloxane (D 4 ) gradually, using functional polymethacryloxypropylsilsesquioxane (PSQ) latex particles with reactive methacryloxypropyl groups synthesized by the hydrolysis and polycondensation of (3-methacryloxypropyl)trimethoxysilane in the presence of mixed emulsifiers as seeds.

Role of surface active additives on reduction of surface free energy and enhancing the mechanical Attributes of easy-to-clean automotive clearcoats: Investigating resistance against simulated tree gum

ty10086 提交于 周四, 08/26/2021 - 13:35
Abstract(#br)The objective of this work is enhancing the clearcoat resistance against simulated tree gum (Arabic gum) using surface active additives including hydroxyl-functional polydimethyl siloxane (PDMS) and hydroxyl-functional silicone polyacrylate which are able to reduce gum adhesion to the clearcoat surface by reducing its surface free energy and work of adhesion. Using a contact angle measuring device, the surface free energy, contact angle and work of adhesion were obtained.

药物未结合浓度和血浆蛋白结合测定的最新进展:分析方法

ty10086 提交于 周三, 08/25/2021 - 16:27
血流中的药物以自由和束缚两种形式存在,其中自由药物负责药理活性。由于蛋白质结合决定了药物在血液中的自由浓度,因此在药物发现和开发的早期阶段测定药物的蛋白质结合具有重要意义。此外,在个性化医疗和治疗药物监测中,最有利于测量药物的自由浓度。为此,需要灵敏、选择性好、快速的分析方法来测定药物的自由浓度及其与蛋白质结合的程度也随之增加。本综述旨在总结近年来用于测定游离药物浓度和血浆蛋白结合的分析方法的进展,重点介绍用于测定血浆蛋白结合的最重要方法。此外,还将介绍和讨论每种方法的概念及其固有的优缺点。

3D打印微流控芯片结合光学纳米结构的多孔适体传感器用于蛋白质检测。

ty10086 提交于 周三, 08/25/2021 - 16:04
生物传感器的微流体集成使生物传感性能得到改善,并为许多应用设计了复杂的片上实验室平台。虽然软光刻和基于聚二甲基硅氧烷( PDMS )的微流体仍然被认为是金标准,但3D打印已经成为微流体系统很有前途的制造替代方案。本文首次将3D打印的聚丙烯酸酯微流控平台与基于无标记多孔硅( PSi )的光学贴体传感器通过简单的键合方法集成在一起。后者利用紫外光固化粘合剂作为中间层,同时保持微通道内多孔区域的精细纳米结构。作为概念的证明,本文构建了一种通用的免标记检测他标记蛋白的模型贴体传感器,并与非微流控和PDMS微流控装置进行了表征和比较。目标蛋白的检测是通过实时监测PSi的反射率变化来实现的,这种变化是由目标结合在多孔纳米结构中的固定适体引起的。与非微流控生物传感平台( 0.04μM vs.2.7μM )相比,微流控集成适配体传感器在0.25 ~ 18 μ M范围内具有良好的选择性和检测限。此外,与传统的基于PDMS的尺寸相近的微流控平台相比,3D打印微流控贴体传感器的性能更加优越。