亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Unexpected Solvent Effect Leading to Interface Segregation of Single-Chain Nanoparticles in All-Polymer Nanocomposite Films upon Solvent Evaporation

溶剂 聚合物 色散(光学) 单体 纳米复合材料 纳米颗粒 化学工程 溶剂效应 蒸发 材料科学 化学 高分子化学 纳米技术 有机化学 热力学 物理 光学 工程类
作者
Qian Zhao,You‐Liang Zhu,Zhong‐Yuan Lu,Hu‐Jun Qian
出处
期刊:Macromolecules [American Chemical Society]
卷期号:56 (5): 2175-2182 被引量:3
标识
DOI:10.1021/acs.macromol.2c02061
摘要

In athermal all-polymer nanocomposites (all-PNCs), single-chain nanoparticles (SCNPs) are often considered to be well miscible with polymer matrixes due to their similarity in chemical compositions. However, internal cross-linking units of SCNPs must have different chemistries from the backbone monomers and, therefore, also from matrix chains. Here, we use large-scale molecular dynamics simulations to study the influence of solvent selectivity, particularly to internal cross-linkers in SCNPs, on dispersion state of SCNPs in all-PNC films upon solvent evaporation. Surprisingly, we find distinct dispersion states of SCNPs in drying films with different solvent selectivities. When the solvent is both good for cross-linkers and backbone/matrix monomers, SCNPs can be uniformly dispersed. However, when the backbone/matrix monomers have better solvophilicity than the cross-linkers and the solvophilicity of the latter is weak enough, we find segregation of SCNPs in surface regions. Such phenomena can be attributed to the intrinsic difference in the solvent density at an interface region from that in the bulk, which eventually results in the aggregation of SCNPs at the interface region where the solvent particles are much less than in the bulk. At the interface region, cross-linkers in the SCNPs will have less contact with the solvent and, therefore, less enthalpy penalty than being located in the bulk region of the film. The results demonstrate that solvent selectivity has a non-negligible effect on the structure of the composite film, which will inevitably have impacts on macroscopic properties of the film.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
ding应助怡春院李老鸨采纳,获得10
3秒前
4秒前
量子星尘发布了新的文献求助10
8秒前
13秒前
13秒前
15秒前
18秒前
19秒前
24秒前
30秒前
blenx完成签到,获得积分10
39秒前
南工问天完成签到,获得积分10
58秒前
1分钟前
1分钟前
1分钟前
张雷应助南工问天采纳,获得20
1分钟前
科研通AI2S应助李治稳采纳,获得10
1分钟前
1分钟前
螺蛳粉入侵元宇宙完成签到,获得积分10
1分钟前
1分钟前
南工问天给南工问天的求助进行了留言
1分钟前
汉堡包应助太清采纳,获得10
1分钟前
疯狂的泥猴桃完成签到,获得积分20
1分钟前
科研通AI2S应助科研通管家采纳,获得10
1分钟前
Hayat应助科研通管家采纳,获得10
1分钟前
量子星尘发布了新的文献求助10
1分钟前
1分钟前
拾光完成签到,获得积分10
2分钟前
大个应助背后梦安采纳,获得10
2分钟前
华仔应助lf采纳,获得10
2分钟前
2分钟前
打打应助Lucille采纳,获得10
2分钟前
testmanfuxk完成签到,获得积分10
2分钟前
lf发布了新的文献求助10
2分钟前
2分钟前
2分钟前
Lucille发布了新的文献求助10
2分钟前
2分钟前
2分钟前
2分钟前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3976649
求助须知:如何正确求助?哪些是违规求助? 3520735
关于积分的说明 11204672
捐赠科研通 3257497
什么是DOI,文献DOI怎么找? 1798716
邀请新用户注册赠送积分活动 877897
科研通“疑难数据库(出版商)”最低求助积分说明 806629