Effect of poly(ethylene oxide) with different molecular weights on the electrospinnability of sodium alginate

水溶液 环氧乙烷 化学 材料科学 静电纺丝 高分子化学 纳米纤维 分子 化学工程 聚合物 纳米技术 共聚物 有机化学 复合材料 工程类
作者
Huarong Nie,Aihua He,Wanling Wu,Jianfen Zheng,Shanshan Xu,Junxing Li,Charles C. Han
出处
期刊:Polymer [Elsevier BV]
卷期号:50 (20): 4926-4934 被引量:89
标识
DOI:10.1016/j.polymer.2009.07.043
摘要

Although sodium alginate (SA) could not be electrospun from its aqueous solution, SA-based electrospun nanofibers can be fabricated with the help of polyethylene oxide (PEO). In this study, the influence of PEO on the electrospinnability of SA aqueous solution was investigated and the roles of chain entanglements and conformations of the blend system were emphasized. It was found that a little amount of PEO100 with high molecular weight could improve the electrospinnability of SA aqueous solution. However, a large amount of PEO2 with low molecular weight had no positive effect on the electrospinnability of SA aqueous solution. Dynamic laser light scattering (DLLS) results showed that only when the PEO molecular chains in aqueous solution were in an entangled state, PEO can enhance the electrospinnability of SA aqueous solution. The further study on rheological measurements showed that SA molecular chains could not form significant entanglements for the electrospinning even when the SA solution concentration approached concentrated regime. SA molecular chains are closely "overlapped" due to its rigid and extended conformation and cannot form effective chain entanglement. The main contribution of PEO100 to improve SA electrospinnability is offering entanglement sites and thereby enhancing the applicable entanglement degree of the blend system. Whereas, although the chain interaction between PEO2 and SA may improve slightly the flexibility of SA chains, the significant chain entanglements of the blend solution is not achieved. Three molecular models are proposed to depict visually the effect of PEO with different molecular weights on chain conformations and entanglements of SA.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
光亮的思柔完成签到,获得积分20
刚刚
刚刚
1秒前
怕黑明雪完成签到,获得积分10
1秒前
2秒前
2秒前
cxm666发布了新的文献求助10
2秒前
大模型应助优雅的怀莲采纳,获得10
2秒前
机灵诺言完成签到,获得积分10
2秒前
2秒前
3秒前
3秒前
ChinaNiu发布了新的文献求助10
4秒前
孙燕应助1112采纳,获得10
4秒前
高大靖仇完成签到,获得积分10
4秒前
5秒前
YY发布了新的文献求助10
6秒前
7秒前
万能图书馆应助醍醐不醒采纳,获得10
7秒前
kong发布了新的文献求助10
7秒前
shirai发布了新的文献求助10
7秒前
冰白发布了新的文献求助10
7秒前
超帅的鹏飞完成签到,获得积分20
7秒前
CipherSage应助莫若舞采纳,获得10
8秒前
8秒前
10秒前
ChinaNiu完成签到,获得积分10
10秒前
量子星尘发布了新的文献求助10
11秒前
wwk发布了新的文献求助10
12秒前
12秒前
千千完成签到,获得积分10
13秒前
13秒前
醍醐不醒完成签到,获得积分10
13秒前
卡拉蜜儿应助尧开采纳,获得30
13秒前
清明发布了新的文献求助10
13秒前
jj完成签到 ,获得积分10
14秒前
14秒前
霜打了的葡萄完成签到,获得积分10
15秒前
16秒前
汉堡包应助wuniuniu采纳,获得10
17秒前
高分求助中
The Mother of All Tableaux Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 2400
Ophthalmic Equipment Market by Devices(surgical: vitreorentinal,IOLs,OVDs,contact lens,RGP lens,backflush,diagnostic&monitoring:OCT,actorefractor,keratometer,tonometer,ophthalmoscpe,OVD), End User,Buying Criteria-Global Forecast to2029 2000
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Cognitive Neuroscience: The Biology of the Mind (Sixth Edition) 1000
Optimal Transport: A Comprehensive Introduction to Modeling, Analysis, Simulation, Applications 800
Official Methods of Analysis of AOAC INTERNATIONAL 600
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3959007
求助须知:如何正确求助?哪些是违规求助? 3505322
关于积分的说明 11123366
捐赠科研通 3236970
什么是DOI,文献DOI怎么找? 1788969
邀请新用户注册赠送积分活动 871459
科研通“疑难数据库(出版商)”最低求助积分说明 802805