碳材料对海藻酸钠纺丝液降解性的影响

纺织学报 ›› 2014, Vol. 35 ›› Issue (2): 138-0.

碳材料对海藻酸钠纺丝液降解性的影响

龙晓静¹ 高翠丽¹ 王兵兵¹ 赵卫¹ 潘若才¹ 夏延致^1，2

1. 青岛大学化学科学与工程学院
2. 青岛大学国家重点实验室培育基地

收稿日期:2013-11-05 修回日期:2013-11-13 出版日期:2014-02-15 发布日期:2014-02-17
通讯作者: 夏延致 E-mail:xyz@qdu.edu.cn
基金资助:
973计划前期研究专项

Influence of carbon materials on degradation of sodium alginate spinning solution

Received:2013-11-05 Revised:2013-11-13 Online:2014-02-15 Published:2014-02-17

摘要/Abstract

摘要： 研究了炭黑（CB）、活性炭(AC)、氧化石墨烯（GO）和多壁碳纳米管（MWCNTs）等碳材料的加入对海藻酸钠(SA)溶液降解性能的影响，利用GPC和旋转粘度计测定了SA/碳材料复合溶液降解率的变化，并在此基础上研究了SA/碳材料复合溶液的降解动力学。结果表明，各种碳材料的加入对SA的防降解效果依次为GO>CB>AC>MWCNTs，其降解速率常数依次为：kSA>kSA/MWCNTs>kSA/AC>kSA/CB>kSA/GO。通过FT-IR、XRD和SEM对SA/碳材料复合溶液防降解效果的表征，结果表明，碳材料与SA之间并未形成共价键，只有氢键作用。经紫外照射的SA/碳材料复合膜，纯SA膜晶区强度稍有下降，SA/GO晶区的强度则明显增强。纯SA膜经紫外照射后出现了裂纹，加入各种碳材料的SA薄膜未发现有裂纹出现。研究结果表明，利用碳材料对SA进行防降解改性是一种工艺简单，操作快捷的方法。

关键词: 海藻酸钠, 碳黑, 氧化石黑烯, 多壁碳纳米管, 降解机制

Abstract: The research aimed to study the degradation effect of carbon black, activated carbon, graphene oxide and multi-walled carbon nanotubes on sodium alginate solution. Employing the GPC and rotation viscometer, the changes of degradation rate of SA/carbon material complex solutions were analyzed firstly and based on those results, degradation kinetics of SA complex solutions were investigated. It was found that among these carbon materials, the effect of anti-degradation was GO>CB>AC>MWCNTs. The degradation rate constants was kSA>kSA/MWCNTs>kSA/AC>kSA/CB>kSA/GO. Anti-degradation effect of SA/carbon material solutions were characterized by FTIR, XRD and SEM. The results indicated that no new covalent bond formed，but H-bond existed between SA and carbon materials. The crystalline region of SA film after UV irradiation was slightly decreased, but graphene oxide/SA complex film was notably enhanced. The neat SA film exhibited cracking while SA/carbon complex film didn’t after UV irradiation. To summarize, carbon materials as degradation agents have advantages of simple technology and easy operation.

Key words: sodium alginaatae, carbon black, graphene oxide, multi-walled carbon nanotubes, degradation mechanism

龙晓静高翠丽王兵兵赵卫潘若才夏延致. 碳材料对海藻酸钠纺丝液降解性的影响[J]. 纺织学报, 2014, 35(2): 138-0.

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