无机纳米粒子对 PAM-g-羧甲基木聚糖纳米复合水凝胶的增强作用,Macromolecular Materials and Engineering

当前位置： X-MOL 学术 › Macromol. Mater. Eng. › 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.)

无机纳米粒子对 PAM-g-羧甲基木聚糖纳米复合水凝胶的增强作用
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2022-06-10 , DOI: 10.1002/mame.202200251
Xinxin Liu ₁ , Minmin Chang ₁ , Hui Zhang ₁ , Junli Ren ₁

Affiliation

在聚丙烯_酰胺-g-_羧甲基木聚糖_（ PAM - g _{_}_{_}_{_} _-CMX) 复合水凝胶。研究了不同形状和不同尺寸的纳米粒子对水凝胶性能的影响。通过傅里叶变换红外光谱、X射线衍射、扫描电子显微镜（SEM）、流变分析、溶胀分析和力学测试来分析纳米复合水凝胶的性能。具有纳米颗粒的复合水凝胶在 SEM 图像中表现出均匀的孔结构和较小的孔径，导致平衡溶胀率降低。此外，结果表明纳米颗粒表面的羟基与PAM- g中的氨基和羧基形成氢键。-CMX交联网络，提高纳米复合水凝胶的机械强度。由于 MnO 的球形和小尺寸（20 nm），具有 20 nm MgO 的水凝胶具有最大的抗压强度（550.9 kPa）、抗拉强度（28.6 kPa）和最长的伸长率（813%）。经过 30 个循环的压缩测试后，具有纳米颗粒的水凝胶保持原始 90% 的强度。具有纳米粒子的水凝胶将为木聚糖应用提供新的见解。

"点击查看英文标题和摘要"

Reinforcement Effects of Inorganic Nanoparticles for PAM-g-carboxymethyl Xylan Nanocomposite Hydrogels

A variety of 0D nanoparticles (MgO, ZnO, Al₂O₃, Fe₂O₃, SiO₂, and TiO₂) as nanofiller materials are introduced into polyacrylamide-g-carboxymethyl xylan (PAM-g-CMX) composite hydrogel. The effects of different shapes and different sizes of nanoparticles on the properties of hydrogels are investigated. The properties of nanocomposite hydrogels are analyzed by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy (SEM), rheological analysis, swelling analysis, and mechanical test. Composite hydrogels with nanoparticles exhibit uniform pore structure and smaller pore size in SEM images, resulting in a reduced equilibrium swelling ratio. In addition, the results show that the hydroxyl groups on the surface of the nanoparticles forms hydrogen bonds with the amino groups and carboxyl groups in the PAM-g-CMX cross-linked network which improve the mechanical strength of nanocomposite hydrogels. The hydrogel with 20 nm MgO has the maximum compressive strength (550.9 kPa), tensile strength (28.6 kPa), and the longest elongation (813%) owing to the spherical shape and small size of MnO (20 nm). The hydrogels with nanoparticles maintain the originated 90% strength after 30 cycles of compressive test. The hydrogels with nanoparticles will offer new insights for xylan application.

更新日期：2022-06-10

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南