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作为表面活性剂,利格诺硫酸盐可以稳定元素硫分散
Tatiana N Lugovitskaya1, Denis A Rogozhnikov1
1Institute of New Materials and Technologies, Ural Federal University named after the First President of Russia B.N. Yeltsin, 19 Mira St., Yekaterinburg 620002, Russia.
Polymers
|December 31, 2025
概括
硫酸盐 (LS) 通过形成保护层来稳定元素硫分散. 最佳稳定性发生在中等的LS度和特定的pH值,较高的分子重量提供更好的稳定性.
科学领域:
- 合体和表面化学
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
背景情况:
- 木质纤维酸盐 (LS),是木质纤维加工的副产品,是两性多电解质.
- 它们的表面活性使得它们在各种应用中作为分散剂和稳定剂非常有用.
- 了解 LS 在水溶液中的行为对于优化其性能至关重要.
研究的目的:
- 研究硫酸盐 (LS) 对元素硫 (S0) 分散物的聚合稳定性的影响.
- 为了确定LS分子量和度如何影响在模拟的热水浸出条件下硫溶液稳定性.
- 阐明LS溶液的物理化学特性及其与分散稳定机制的相关性.
主要方法:
- 使用导电计,电位计,张力计和粘度计对LS溶液进行物理化学表征.
- 在LS.的存在下,对元素硫 (S0) 土壤的制备和稳定性评估.
- 在不同温度和pH条件下评估分散稳定性.
主要成果:
- 溶液的成分,分子量和度显著影响其溶液特性 (导电性,pH,粘度,表面活性).
- LS通过静电和硬体机制稳定硫土壤,在中等的LS度 (0.02-0.32 g/dm3) 和pH值4.5-5.5.5时具有最佳稳定性.
- 高分子量LS提供卓越的固体稳定性;随着温度的增加,溶液稳定性会降低,而LS稳定作用会随着pH的变化而逆转.
结论:
- 自然存在的硫酸盐可以有效地控制含硫异相系统的聚合稳定性.
- 这些发现支持LS作为水金属和化学工程中的环保分散剂的使用.
- 定制LS属性允许为特定的工业应用设计稳定的合体系统.
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