Biomimic Plant Cuticle from Hyperbranched Poly(ricinoleic acid) and Cellulose Film
Biomimic Plant Cuticle from Hyperbranched Poly(ricinoleic acid) and Cellulose Film
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DOI：
10.1021/acssuschemeng.5b01392
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发表时间：
2016-01
影响因子：
8.4
通讯作者：
Bo‐xing Zhang;H. Uyama
中科院分区：
文献类型：
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作者：
Bo‐xing Zhang;H. Uyama
植物角质层是一种理想的生物基包装材料，具有良好的平衡性能。然而，它不能从植物中提取用于实际应用。本论文以超支化聚蓖麻油酸（HBPRA，生物基含量> 96%）和纤维素膜为原料，通过紫外光引发的噻吩点击反应，成功制备了仿生植物表皮。这种仿生角质层具有优异的透明度（在可见光范围内的透射率> 90%）。扫描电镜观察表明，仿生角质层由两层组成，两层紧密贴合。仿生角质层的两个表面的性质表现出显着差异。纤维素侧是亲水的，接触角（CA）约为44°，铅笔硬度> 6 H。相反，HBPRA侧是疏水的，CA约为91°，铅笔硬度为B。相对于光滑的纤维素侧，HBPRA侧可以在温和的力下附着到各种基底上。拉伸试验表明，该复合材料具有良好的力学性能。
Plant cuticle is an ideal biobased packaging material with well-balanced performance. However, it could not be extracted from plants for practical applications. In this work, we successfully fabricated a biomimic plant cuticle from hyperbranched poly(ricinoleic acid) (HBPRA, biobased content > 96%) and cellulose film through UV-initiated thio-ene click reaction. This biomimic cuticle possessed excellent transparency (transmittance ≈ 90% in the visible light range). The SEM observation showed that the biomimic cuticle was composed of two layers, which were perfectly attached. The properties of two surfaces of biomimic cuticle displayed significant differences. Cellulose side was hydrophilic with contact angle (CA) around 44° and pencil hardness > 6H. On the contrary, the HBPRA side was hydrophobic with CA about 91° and pencil hardness ≈ B. With respect to the slippery cellulose side, HBPRA side could attach to various substrates under gentle force. In addition, the tensile test showed good mechanical prope...