本文对聚丙烯腈(PAN)/酶解木质素(EHL)混合物的增塑熔融纺丝进行了研究,并对获得的纤维的结构与性能进行了分析.采用单螺杆纺丝机在150～200℃可以实现PAN/EHL的增塑熔融纺丝,在不同的卷绕速度下(200～500m/min)可得到均匀连续、直径在35μm左右的卷绕丝.本文采用傅里叶红外(FTIR-ATR),热失重分析(TGA),扫描电镜(SEM)和X射线衍射等手段对纤维进行表征.结果表明,增塑剂脱除后对纤维表面和断面形貌进行观察发现,纤维表面基本光滑,径向结构均一,无皮芯结构,两相间具有良好的相容性.木质素的加入使得PAN/EHL增塑熔纺纤维的热稳定性及碳收率明显提高,同时结晶度下降.
参考文献
| [1] | Charles D Coxe .Bridgeport,Conn,Shaping Polyacrylonitrile[P].USA,US2585444,1952-2-12. |
| [2] | Frushour B G .New thermal analytical technique for acrylic polymer[J].Polymer Bulletin,1981,4(05):305-314. |
| [3] | Atureliya S.K;Bashir Z .Continuous plasticized meltextrusion of polyacrylonitrile homopolymer[J].POLYMER,1993,34(24):5116-5122. |
| [4] | Matthew D. Wilding;Donald G. Baird .Melt Processing and Rheology of an Acrylonitrile Copolymer With Absorbed Carbon Dioxide[J].Polymer engineering and science,2009(10):1990-2004. |
| [5] | Yineai Tian;Keqing Han;Wenhui Zhang;Muhuo Yu .Influence of melt temperature on structure of polyacrylonitrile in Ionic Liquids during Plasticized melt spinning process[J].Applied Mechanics and Materials,2013,268-270:483-486. |
| [6] | Maldhure, A.V.;Chaudhari, A.R.;Ekhe, J.D. .Thermal and structural studies of polypropylene blended with esterified industrial waste lignin[J].Journal of thermal analysis and calorimetry,2011(2):625-632. |
| [7] | Canetti M;Bertini F;De Chirico A;Audisio G .Thermal degradation behaviour of isotactic polypropylene blended with lignin[J].Polymer Degradation and Stability,2006(3):494-498. |
| [8] | D.M. Fernandes;A.A. Winkler Hechenleitner;A.E. Job;E. Radovanocic;E.A. Gomez Pineda .Thermal and photochemical stability of poly(vinyl alcohol)/modified lignin blends[J].Polymer Degradation and Stability,2006(5):1192-1201. |
| [9] | Mousavioun, P.;George, G.A.;Doherty, W.O.S. .Environmental degradation of lignin/poly(hydroxybutyrate) blends[J].Polymer Degradation and Stability,2012(7):1114-1122. |
| [10] | Kubo S;Kadla JF .Kraft lignin/poly(ethylene oxide) blends: Effect of lignin structure on miscibility and hydrogen bonding[J].Journal of Applied Polymer Science,2005(3):1437-1444. |
| [11] | Sanjeev P. Maradur;Chang Hyo Kim;So Yeun Kim .Preparation of carbon fibers from a lignin copolymer with polyacrylonitrile[J].Synthetic Metals,2012(5/6):453-459. |
| [12] | Xuezhu Xu;Jian Zhou;Long Jiang;Gilles Lubineau;Ye Chen;Xiang-Fa Wu;Robert Piere .Porous core-shell carbon fibers derived from lignin and cellulose nanofibrils[J].Materials Letters,2013(Oct.15):175-178. |
| [13] | Uchida T;Shimoyama I;Lto Y.[A].Pennsylvania,The American Carbon Committee and Lehigh University,1971:31-32. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%