Preparation of Printable and Biodegradable Cellulose-Laponite Composite for Electronic Device Application
Preparation of Printable and Biodegradable Cellulose-Laponite Composite for Electronic Device Application
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DOI：
10.1007/s10924-020-01854-0
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发表时间：
2020-08-09
影响因子：
5.3
通讯作者：
Scott, Janet L.
中科院分区：
文献类型：
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作者：
Chandrasekaran, Saravanan;Sotenko, Maria;Scott, Janet L.
通过使用纤维素作为连续基质、laponite作为阻燃填料以各种重量比（相对于用于制备复合材料的α-纤维素的量为0、5、10和20重量%）和1-乙基-3-甲基咪唑乙酸盐（[emim][OAc]）作为可回收的溶解介质制备的可印刷和可生物降解的印刷电路板（PCB）。制备的纤维素复合材料进行了物理，化学，热，机械和生物降解分析，以检查纤维素-合成锂皂石复合材料的生物降解电子应用的适用性。合成锂皂石的加入提高了纤维素-合成锂皂石复合材料的降解温度和阻燃性能，降低了复合材料的力学性能。通过用相对少量的疏水剂（< 1重量%）处理，纤维素复合材料的表面性质从亲水性转化为疏水性（接触角值在50度至112度的范围内增加）。导电油墨印刷实验说明了疏水剂和合成锂皂石在复合材料中的作用。采用酶处理法对纤维素的生物降解性进行了评价，并研究了合成锂皂石、疏水剂和导电油墨对纤维素生物降解性的影响。
Printable and biodegradable printed circuit boards (PCBs) prepared by using cellulose as the continuous matrix, laponite as flame retardant filler with various weight ratio (0, 5, 10 and 20 wt% with respect to the alpha-cellulose quantity used to prepare the composites) and 1-ethyl-3-methylimidazolium acetate ([emim][OAc]) as the recoverable dissolution medium. Prepared cellulose-composites were subjected into physical, chemical, thermal, mechanical and biodegradation analyses to check the suitability of the cellulose-laponite composite for biodegradable electronic application. The addition of laponite into cellulose increased the degradation temperature, flame retardancy and decreased the mechanical properties of the cellulose-laponite composites. The surface nature of the cellulose composite converted from hydrophilic to hydrophobic (contact angle value increased in the range from 50 degrees to 112 degrees) by treating with relatively small amount of hydrophobizing agent (< 1 wt%). The conductive ink printing experiments on the composites explaining the role of hydrophobizing agent and laponite in the composites. Biodegradability of the cellulose was evaluated by enzyme treatments and derived the effect of laponite, hydrophobic agent and conductive ink.