| Interplay between caging and bonding in binary concentrated colloidal suspensions | |
| Jia, Di1,2; Cheng, He1,2; Han, Charles C.3 | |
| 刊名 | Langmuir
 |
| 2018-03-06 | |
| 卷号 | 34期号:9页码:3021-3029 |
| ISSN号 | 0743-7463 |
| DOI | 10.1021/acs.langmuir.7b03965 |
| 通讯作者 | Cheng, he(chenghe@ihep.ac.cn) ; Han, charles c.(c.c.han@szu.edu.cn) |
| 英文摘要 | When a liquid becomes dynamically arrested, a gel, a repulsive glass, or an attractive glass state will form. bonding and caging mechanisms decide their static structures and dynamic properties. to better understand their interplay, the competition between bonding and caging in a binary mixture of polystyrene core/poly(n-isopropylacrylamide) shell (cs) microgels and sulfonated polystyrene (pss) particles is studied. cs microgels have short-range attraction above the volume phase transition temperature, whereas pss species experiences relatively long-range electrostatic repulsion. adding more pss into the binary mixture will, of course, increase the total effective volume fraction but lead to different properties in gel or glass states. for instance, in gels, it increases the localization length and weakens the gel, whereas in glass, it decreases the localization length and strengthens the glass. this thus implies that the static and dynamic properties of gels are mainly controlled by bonding and those of both repulsive and attractive glasses are governed by caging. on the other hand, increasing the temperature will decrease the effective volume fraction because of the volume phase transition of the cs microgels. a discontinuous repulsive glass-to-liquid-to-gel transition can be observed when the pss concentration is low, but a continuous repulsive glass-to-gel transition can also be observed with the increase of the pss concentration. this may hint that glass transition and physical gelation share a similar mechanism, whereas the former has a longer relaxation time. |
| WOS关键词 | CORE-SHELL LATEX ; HARD-SPHERE SUSPENSIONS ; GLASS-TRANSITION ; ATTRACTIVE INTERACTIONS ; MICROGEL SUSPENSIONS ; VOLUME TRANSITION ; SOFT ; RHEOLOGY ; PARTICLES ; GELATION |
| WOS研究方向 | Chemistry ; Materials Science |
| WOS类目 | Chemistry, Multidisciplinary ; Chemistry, Physical ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000427095400013 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2178084 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Cheng, He; Han, Charles C. |
| 作者单位 | 1.Chinese Acad Sci, IHEP, CSNS, Dongguan 523803, Peoples R China 2.DINS, Dongguan 523808, Peoples R China 3.Shenzhen Univ, Inst Adv Study, Shenzhen 518060, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Di,Cheng, He,Han, Charles C.. Interplay between caging and bonding in binary concentrated colloidal suspensions[J]. Langmuir,2018,34(9):3021-3029. |
| APA | Jia, Di,Cheng, He,&Han, Charles C..(2018).Interplay between caging and bonding in binary concentrated colloidal suspensions.Langmuir,34(9),3021-3029. |
| MLA | Jia, Di,et al."Interplay between caging and bonding in binary concentrated colloidal suspensions".Langmuir 34.9(2018):3021-3029. |
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