A chemical modification-free strategy for fabricating tough and tear-resistant natural rubber/polysaccharide material

IF 4.1 2区 化学 Q2 POLYMER SCIENCE
Shaoqi Huang, Junqi Zhang, Lingmin Kong, Zheng-Tian Xie, Jinrong Wu
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Abstract

Natural rubber latex (NRL) is widely used in a variety of products, including gloves, balloons, condoms, and foamed items like pillows and footwear components. However, the limitations of traditional NRL materials in terms of tear resistance and toughness restrict their use in high-end applications. Hence, developing tough and tear-resistant NRL materials using eco-friendly and user-friendly methods remains highly desirable. In this work, a chemical modification-free method is reported for the fabrication of tough and tear-resistant vulcanized natural rubber/carrageenan material (SNR/KC). KC is introduced into NRL via a modified latex mixing strategy, which can form hydrogen bonds with the non-rubber components (NRC) such as proteins on the surface of natural rubber latex particles. As a result, KC can be well dispersed and form a segregated network structure within the rubber matrix. The rigid filler network created by KC effectively impedes crack propagation and enhances energy dissipation during deformation. Furthermore, the presence of KC in the NR matrix fosters the strain-induced crystallization (SIC) of NR. All these contribute to the superior tear resistance and toughness of composite materials. With only 0.1 phr of KC, the composite exhibits a fracture toughness of 208.4 kJ/m2 and a tear strength of 50 kN/m. This work demonstrated that the interaction between polysaccharide and NRC of NRL can be leveraged to fabricate tough and tear-resistant NR composites without any chemical modification and tedious process, favoring a green development and high-quality pursuit of NRL materials.

Abstract Image

Abstract Image

制造坚韧抗撕裂天然橡胶/多糖材料的无化学改性策略
天然橡胶乳胶(NRL)广泛应用于各种产品,包括手套、气球、避孕套以及枕头和鞋类部件等发泡产品。然而,传统 NRL 材料在抗撕裂性和韧性方面的局限性限制了其在高端应用中的使用。因此,采用环保和用户友好的方法开发坚韧且抗撕裂的 NRL 材料仍然是非常理想的选择。在这项工作中,报告了一种无化学改性的方法,用于制造坚韧且抗撕裂的硫化天然橡胶/卡拉胶材料(SNR/KC)。通过改性胶乳混合策略将 KC 引入 NRL,KC 可与天然胶乳颗粒表面的蛋白质等非橡胶成分(NRC)形成氢键。因此,KC 可以很好地分散,并在橡胶基质中形成隔离的网络结构。KC 形成的刚性填充网络可有效阻碍裂纹扩展,并增强变形过程中的能量消耗。此外,KC 在 NR 基体中的存在还能促进 NR 的应变诱导结晶(SIC)。所有这些都有助于提高复合材料的抗撕裂性和韧性。只需 0.1 phr 的 KC,复合材料就能表现出 208.4 kJ/m2 的断裂韧性和 50 kN/m 的撕裂强度。这项研究表明,利用多糖与 NRL 的 NRC 之间的相互作用,无需任何化学改性和繁琐的工艺,就能制造出坚韧且抗撕裂的 NR 复合材料,有利于 NRL 材料的绿色开发和高品质追求。
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来源期刊
Polymer
Polymer 化学-高分子科学
CiteScore
7.90
自引率
8.70%
发文量
959
审稿时长
32 days
期刊介绍: Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.
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