您的位置: 专家智库 > >

国家自然科学基金(s21004057)

作品数:1 被引量:0H指数:0
发文基金:国家自然科学基金国家重点基础研究发展计划更多>>
相关领域:理学更多>>

文献类型

  • 1篇中文期刊文章

领域

  • 1篇理学

主题

  • 1篇ACRYLA...
  • 1篇AGGREG...
  • 1篇HYDROG...
  • 1篇HYSTER...
  • 1篇THERMO...
  • 1篇THERMO...

传媒

  • 1篇Chines...

年份

  • 1篇2014
1 条 记 录,以下是 1-1
排序方式:
Revisiting the Thermosensitivity of Poly(acrylamide-co-diacetone acrylamide)
2014年
The lower critical solution temperature (LCST) behavior of poly(acrylamide-co-diacetone acrylamide) (poly(AM-co-DAM)) copolymer in aqueous solutions was studied. The results demonstrate the LCST linearly decreases as the molar fraction of DAM (fDAM) increases. In the range of fDAM 〈 0.36, the transmittance increases as fDAM decreases because the more hydrophilic copolymer chains can form looser aggregates with a lower refractive index. The transmittance exhibits a minimum when fDAM is less than 0.28 as the chains form micelle-like structure with a size smaller than the wavelength. The LCST decreases with the initial polymer concentration, but it levels off when the polymer concentration is high enough. Moreover, no hysteresis can be observed in the change of transmittance during the heating-cooling process because no additional hydrogen bonds are formed in the collapsed state due to the steric hindrance of the large side groups in DAM units.
Xin-ming XingGuang-ming LiuYan-wei Ding张广照
关键词:THERMOSENSITIVEAGGREGATION
共1页<1>
聚类工具0