Fabrication of homogeneous and enhanced soybean protein isolate-based composite films via incorporating TEMPO oxidized nanofibrillated cellulose stablized nano-ZnO hybrid
Fabrication of homogeneous and enhanced soybean protein isolate-based composite films via incorporating TEMPO oxidized nanofibrillated cellulose stablized nano-ZnO hybrid
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通过掺入 TEMPO 氧化纳米原纤化纤维素稳定的纳米 ZnO 杂化物制备均匀且增强的大豆分离蛋白复合膜
DOI：
10.1007/s10570-017-1469-5
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发表时间：
2017-08
期刊：
影响因子：
5.7
通讯作者：
Li Jianzhang
中科院分区：
文献类型：
--
作者：
Yan Yutao;Wang Kaili;Wang Zhong;Gindl-Altmutter Wolfgang;Zhang Shifeng;Li Jianzhang
大豆分离蛋白（SPI）具有丰富的资源、可再生性、可生物降解性和良好的成膜性，非常适合于制备复合膜。本研究通过将纳米ZnO和2，2，6，6-四甲基哌啶1-氧（克里思）氧化的纳米原纤化纤维素（TNFC）单独或共同引入，制备了不同的SPI基复合膜。纳米ZnO的引入赋予了薄膜的多功能性，而TNFC的引入则起到了稳定纳米颗粒的作用。宏观光学表征和微观扫描电镜-能谱分析（SEM-EDX）结果表明，由于TNFC对纳米ZnO的机械约束和物理吸附作用，TNFC能显著降低纳米ZnO在SPI基体中的聚集，提高其分散性。纳米ZnO和TNFC的加入不仅提高了SPI复合膜的力学性能和热稳定性，而且还改善了SPI复合膜的热稳定性。与未改性SPI膜相比，拉伸强度和杨氏模量分别提高了73%和57%，最高降解温度提高了10 °C。这些结果可以归因于SPI组分、TNFC和纳米ZnO之间形成的氢键，并通过衰减全反射-傅立叶变换红外光谱和X射线衍射分析对其进行了进一步研究。加入纳米ZnO后，SPI基复合膜还具有优异的紫外屏蔽能力和上级抗菌能力。为此，本工作为纳米粒子在聚合物增强和多功能化方面的分散和应用提供了有价值的参考。
Soybean protein isolate (SPI) is well-suited to the preparation of composite films due to its abundance, renewability, biodegradability, and favorable film-forming capacity. In this study, different SPI-based composite films were prepared by incorporating nano-ZnO and 2,2,6,6-Tetramethylpiperidine 1-oxyl (TEMPO) oxidized nanofibrillated cellulose (TNFC) separately or together. Nano-ZnO was introduced to endow the films with multifunction capability, while TNFC was introduced to stabilize the nanoparticles. Both the macro optical characterization and micro scanning electron microscope with energy dispersive X-ray (SEM–EDX) analysis indicated that TNFC could significantly decrease nano-ZnO aggregation and improve its dispersibility in the SPI matrix due to the mechanical restriction and physical adsorption effect of TNFC to the nano-ZnO. In addition to the improved dispersibility, incorporating nano-ZnO and TNFC benefitted the mechanical properties and thermo stability of the SPI-based composite films. The tensile strength and Young’s modulus increased by 73 and 57%, respectively, and the maximum degradation temperature increased by 10 °C, compared to that of the unmodified SPI film. These results can be attributed to the hydrogen bonds formed among SPI components, TNFC, and nano-ZnO, which were further examined by attenuated total reflectance-fourier transform infrared spectroscopy and X-ray diffraction analysis. After the incorporation of nano-ZnO, the SPI-based composite films also possessed excellent UV-shielding capacity and superior antimicrobial ability. To this effect, this work provides a valuable reference for nanoparticles dispersion and application in regards to polymer enhancement and multi-functionalization.
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影响因子：
2
作者：
Park, SK;Bae, DH;Rhee, KC
通讯作者：
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影响因子：
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作者：
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通讯作者：
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