中国科技论文
中國科技論文
중국과기논문
China Sciencepaper
2015年
18期
2191-2195,2200
,共6页
高分子物理%热致相分离%复合%球晶%多孔%油-水分离
高分子物理%熱緻相分離%複閤%毬晶%多孔%油-水分離
고분자물리%열치상분리%복합%구정%다공%유-수분리
polymer physics%thermally induced phase separation (TIPS)%composite%spherulite%porous material%oil-water sepa-ration
通过热致相分离法（TIPS）成功制备了聚乳酸／聚己内酯（PLLA／PCL）复合球晶多孔材料。研究了 PLLA／PCL 比例对球晶形成、球晶微观形貌和结晶度的影响，并测量了该多孔材料的疏水性和油-水分离性能。DSC 测试表明，PCL 的加入可以有效提高 PLLA／四氢呋喃（THF）溶液的结晶温度和 PLLA 的结晶度。PLLA／PCL（质量比为5∶1）球晶材料的结晶度为64．4％，比纯 PLLA 的结晶度高24．0％；适量 PCL（质量分数≤33．3％）的存在可以使 PLLA／PCL 形成捆束状纳米纤维球晶，证明 PCL能促进 PLLA 结晶；PLLA／PCL 复合球晶多孔材料的表观水接触角和油接触角分别为146°和0°，表明它具有良好的疏水性和亲油性，可用作油水分离材料。它的高孔隙率的结构特征使它的饱和吸油量达到约16 g／g。PLLA／PCL 复合球晶多孔材料有望用作生物降解型油水分离材料。
通過熱緻相分離法（TIPS）成功製備瞭聚乳痠／聚己內酯（PLLA／PCL）複閤毬晶多孔材料。研究瞭 PLLA／PCL 比例對毬晶形成、毬晶微觀形貌和結晶度的影響，併測量瞭該多孔材料的疏水性和油-水分離性能。DSC 測試錶明，PCL 的加入可以有效提高 PLLA／四氫呋喃（THF）溶液的結晶溫度和 PLLA 的結晶度。PLLA／PCL（質量比為5∶1）毬晶材料的結晶度為64．4％，比純 PLLA 的結晶度高24．0％；適量 PCL（質量分數≤33．3％）的存在可以使 PLLA／PCL 形成捆束狀納米纖維毬晶，證明 PCL能促進 PLLA 結晶；PLLA／PCL 複閤毬晶多孔材料的錶觀水接觸角和油接觸角分彆為146°和0°，錶明它具有良好的疏水性和親油性，可用作油水分離材料。它的高孔隙率的結構特徵使它的飽和吸油量達到約16 g／g。PLLA／PCL 複閤毬晶多孔材料有望用作生物降解型油水分離材料。
통과열치상분리법（TIPS）성공제비료취유산／취기내지（PLLA／PCL）복합구정다공재료。연구료 PLLA／PCL 비례대구정형성、구정미관형모화결정도적영향，병측량료해다공재료적소수성화유-수분리성능。DSC 측시표명，PCL 적가입가이유효제고 PLLA／사경부남（THF）용액적결정온도화 PLLA 적결정도。PLLA／PCL（질량비위5∶1）구정재료적결정도위64．4％，비순 PLLA 적결정도고24．0％；괄량 PCL（질량분수≤33．3％）적존재가이사 PLLA／PCL 형성곤속상납미섬유구정，증명 PCL능촉진 PLLA 결정；PLLA／PCL 복합구정다공재료적표관수접촉각화유접촉각분별위146°화0°，표명타구유량호적소수성화친유성，가용작유수분리재료。타적고공극솔적결구특정사타적포화흡유량체도약16 g／g。PLLA／PCL 복합구정다공재료유망용작생물강해형유수분리재료。
Porous materials composed of PLLA/PCL composite spherulites were fabricated by thermally induced phase separation (TIPS).The effect of PLLA/PCL ratio on the solution crystallization behavior,spherulite morphology,degree of crystallinity (Xc),and oil-water separation property were investigated.The results show that that the presence of PCL component can in-crease the crystallization temperature of PLLA component.The Xc of the PLLA/PCL (mass fraction 5:1)composite spherulite increases to 64.4%,which is 24.0% higher than that of the pure PLLA spherulite.PLLA/PCL can form sheaf-like composite spherulites,confirming that the PCL component effectively promotes the crystallization of PLLA.The porous PLLA/PCL com-posite material has an apparent water and oil contact angle of 146°and 0°,respectively,indicating that it is super hydrophobic and oleophilic.In combination with the high porosity,it shows oil absorption capacity up to 16 g/g.The porous PLLA/PCL compos-ite spherulitic material can quickly and effectively separate oil layer from water.It can be applied as a promising eco-friendly oil-water separation material.
