在溶液中的纤维素和聚烯二烯之间的特定分散相互作用转化为纤维中的共价相互作用
Markel I Vinogradov1, Lyudmila K Golova1, Igor S Makarov1
1A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29, Leninsky Prospekt, 119991 Moscow, Russia.
Materials (Basel, Switzerland)
|September 9, 2023
概括
研究人员研究了纤维素和聚烯二 (PAN) 共聚合物乳液,确定了复合纤维的最佳条件. 这些纤维在360°C时形成共价键,影响碳化.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 织工程 织工程 织工程
背景情况:
- 纤维素和聚烯 (PAN) 共聚合物是具有多种应用的先进材料.
- 了解它们在N-methylmorpholine-N-oxide中的形态转化对于材料加工至关重要.
- 控制共聚合物组成和加工条件影响纤维特性.
研究的目的:
- 为了研究纤维素/PAN共聚合物乳液中的形态变化.
- 为了确定创建复合纤维的可线性范围.
- 分析产生的纤维的结构,热和化学特性.
主要方法:
- 乳液制备和形态分析.
- 风湿学研究以确定可旋转性.
- 用X射线衍射进行结构分析.
- 差分扫描热度计 (DSC) 和高温扩散反射IR光谱仪用于热和化学分析.
主要成果:
- 通过各种度,温度和变形强度观察到形态变化.
- 确定了可旋转的特定温度度范围,使复合纤维生产成为可能.
- 纤维呈现异质纤维质地,随着PAN含量增加,纤维素结晶性下降.
- 在360°C时检测到一个新的外热峰值,表明纤维素和PAN之间形成了共价键.
- 在PAN成分中的基被确定为对碳化具有重要意义.
结论:
- 该研究成功地确定了织纤维素/PAN复合纤维的最佳条件.
- 在360°C时形成共价键是了解热处理过程中纤维行为的关键发现.
- 基的存在表明了增强碳化过程的潜力.
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