Formation of depth filter microfiltration membranes of poly(L-lactic acid) via phase separation
Formation of depth filter microfiltration membranes of poly(L-lactic acid) via phase separation
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DOI：
10.1016/j.memsci.2012.01.002
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发表时间：
2012-04-01
影响因子：
9.5
通讯作者：
Lloyd, Douglas R.
中科院分区：
文献类型：
--
作者：
Tanaka, Takaaki;Nishimoto, Takayuki;Lloyd, Douglas R.
本文报道了以可生物降解的聚左旋乳酸（PLLA）为原料制备的深滤微滤膜。本文报道的非对称多孔膜是通过非溶剂诱导和热诱导相分离相结合的方法形成的。当从膜的多孔或粗糙侧过滤细胞悬浮液时，膜用作高效和快速的深层过滤器以保留细菌细胞，而当从光滑皮肤侧进料悬浮液时，膜用作筛网过滤器。使用后，深层过滤器通过非酶降解处理-这一过程在60摄氏度的潮湿条件下显著加速，通常在这种条件下进行堆肥。事实上，这里报道的PLLA深层过滤器可以通过堆肥处理，这将有助于减少生物化学和食品工业中的工业废物，当它们用作预过滤器时。(C)2012年爱思唯尔B。V.保留所有权利。
Depth filter microfiltration membranes produced from biodegradable poly(l-lactic acid) (PLLA) are reported in this paper. The asymmetric porous membranes reported here were formed via a process that combined nonsolvent-induced and thermally induced phase separation. The membranes served as efficient and rapid depth filters to retain bacterial cells when cell suspensions were filtered from the porous or rough side of the membrane, while serving as screen filters when the suspension was fed from the smooth skin side. After use, the depth filters were disposed of by non-enzymatic degradation - a process that was significantly accelerated in wet conditions at 60 degrees C, conditions under which composting is usually operated. The fact that the PLLA depth filters reported here can be disposed of by composting will help reduce industrial wastes in biochemical and food industries when they are used as a pre-filter. (C) 2012 Elsevier B. V. All rights reserved.