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不同的螺旋转速对粉的结构和性能的影响
Kun Wang1, Congping Tan1, Haiteng Tao1
1State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.
Carbohydrate polymers
|January 14, 2024
概括
在双螺丝挤出中优化螺丝速度是提高基于粉的草性能的关键. 该研究显示,螺丝速度显著影响机械强度和耐水性,这对于工业生产至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 食品科学 食品科学 食品科学
- 聚合物加工 聚合物加工
背景情况:
- 基于粉的材料为传统塑料提供了一个可持续的替代品.
- 挤出加工参数显著影响材料性能.
- 了解螺旋速度的影响对于优化粉草生产至关重要.
研究的目的:
- 阐明螺丝速度在双螺丝挤出过程中影响基于粉的吸管性能的机制.
- 为了比较不同螺旋转速生产的粉吸管的结构和特征变化.
- 为工业规模生产基于粉的草提供理论基础.
主要方法:
- 基于粉的吸管是使用双螺杆挤出机以不同的螺杆速度 (3Hz到13Hz) 制造的.
- 结构分析包括了氨基蛋白链分布 (A和B3链) 和基组吸收峰值.
- 材料的表征包括测量相对晶度,凝化度,曲强度和吸水率.
主要成果:
- 增加螺丝转速改变了氨基培克链比率,并改变了基组吸收峰值,表明结构变化.
- 相对结晶度和凝化度随着螺丝转速的提高而下降.
- 最佳性能,包括含有粉素的最高含量和凝化温度的最低吸水率,在7 Hz的螺丝转速下观察到,尽管性能并没有随速度线性增加.
结论:
- 螺丝速度对基于粉的吸管的机械强度,性和疏水性产生重大影响.
- 这项研究揭示了螺丝速度对热塑性挤出中的机械性能和耐水性的影响的潜在机制.
- 这些发现为在工业生产以粉为基础的吸管中优化螺丝速度提供了理论基础.
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