Tessanan Wasan, Daniel Philippe, Phinyocheep Pranee
Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Payathai, Bangkok 10400, Thailand.
Institut des Molécules et des Matériaux du Mans (IMMM), UMR CNRS 6283, Faculté des Sciences et Technologie, Le Mans Université, Bd O. Messiaen, CEDEX 09, 72085 Le Mans, France.
Polymers (Basel). 2023 Oct 17;15(20):4110. doi: 10.3390/polym15204110.
Acrylated natural rubber (ANR) with various acrylate contents (0.0-3.5 mol%) was prepared from natural rubber as a raw material and then incorporated with commercial 3D resin to fabricate specimens using digital light processing. As a result, the utilization of ANR with 1.5 mol% acrylate content could provide the maximum improvement in stretchability and impact strength, approximately 155% and 221%, respectively, over using pure 3D resin, without significant deterioration of tensile modulus and mechanical strength. According to evidence from a scanning electron microscope, this might be due to the partial interaction between the dispersed small rubber particles and the resin matrix. Additionally, the glass-transition temperature of the 3D-printed sample shifted to a lower temperature by introducing a higher acrylate content in the ANR. Therefore, this work might offer a practical way to effectively enhance the properties of the fundamental commercial 3D resin and broaden its applications. It also makes it possible to use natural rubber as a bio-based material in light-based 3D printing.
以天然橡胶为原料制备了具有不同丙烯酸酯含量（0.0 - 3.5摩尔%）的丙烯酸化天然橡胶（ANR），然后将其与商用3D树脂混合，采用数字光处理技术制备试样。结果表明，与使用纯3D树脂相比，使用丙烯酸酯含量为1.5摩尔%的ANR可使拉伸性和冲击强度分别提高约155%和221%，且拉伸模量和机械强度无明显下降。扫描电子显微镜的证据表明，这可能是由于分散的小橡胶颗粒与树脂基体之间存在部分相互作用。此外，通过在ANR中引入更高的丙烯酸酯含量，3D打印样品的玻璃化转变温度向更低温度移动。因此，这项工作可能为有效增强基础商用3D树脂的性能并拓宽其应用提供一种实用方法。它还使得在光基3D打印中使用天然橡胶作为生物基材料成为可能。
