In the study, the bioplastics were prepared by coupling silylated starch with acrylated epoxidized soybean oil (AESO) at various curing temperatures. 3-aminopropyltriethoxy silane (APTES) was grafted onto starch by the condensation between Si-OH and C-OH. As demonstrated by FTIR and silica content analysis, starch was successfully modified by APTES. The compatibility between silylated starch and AESO was weak as observed by FESEM. The appearance of C-N bonds confirmed the reaction between AESO and silylated starch. An apparent increase of tensile strength from 8.03 MPa to 14.12 MPa was discovered when the bioplastics were cured from 80 °C to 120 °C. Opacity of the bioplastics was enhanced remarkably by AESO due to the incompatibility of silylated starch and AESO. Water resistance test showed that the bioplastics were less sensitive to water after the addition of AESO. The bioplastics maintained good biodegradability after the introduction of AESO. However, increasing the curing temperatures of the bioplastics yielded weak effects on the water resistance and enzymatic degradation of the bioplastics. The bioplastics with excellent mechanical and water-resistant properties were synthesized via the incorporation of AESO under high-temperature curing. The property changes are highly desirable for packaging applications.

在该研究中，通过在不同固化温度下将硅烷化淀粉与丙烯酸酯化环氧化大豆油（AESO）偶联来制备生物塑料。通过 Si-OH 和 C-OH 之间的缩合，将 3-氨基丙基三乙氧基硅烷 (APTES) 接枝到淀粉上。 FTIR 和二氧化硅含量分析表明，APTES 成功对淀粉进行了改性。 FESEM 观察到甲硅烷基化淀粉与 AESO 之间的相容性较弱。 CN键的出现证实了AESO和甲硅烷基化淀粉之间的反应。当生物塑料从 80 °C 固化到 120 °C 时，拉伸强度明显增加，从 8.03 MPa 增加到 14.12 MPa。由于甲硅烷基化淀粉和 AESO 的不相容性，AESO 显着提高了生物塑料的不透明度。耐水性测试表明，添加AESO后生物塑料对水的敏感性降低。引入AESO后生物塑料保持了良好的生物降解性。然而，提高生物塑料的固化温度对生物塑料的耐水性和酶降解性影响较弱。通过在高温固化下掺入AESO，合成了具有优异机械性能和耐水性能的生物塑料。这些性能变化对于包装应用来说是非常理想的。