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逐层法制备硅酸钙水合物/聚合物纳米复合材料的研究

A Study of Calcium-Silicate-Hydrate/Polymer Nanocomposites Fabricated Using the Layer-By-Layer Method.

作者信息

Kamali Mahsa, Ghahremaninezhad Ali

机构信息

Department of Civil, Architectural and Environmental Engineering, University of Miami, Coral Gables, FL 33146, USA.

出版信息

Materials (Basel). 2018 Mar 30;11(4):527. doi: 10.3390/ma11040527.

DOI:10.3390/ma11040527
PMID:29601495
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5951373/
Abstract

Calcium-silicate-hydrate (CSH)/polymer nanocomposites were synthesized with the layer-by-layer (LBL) method, and their morphology and mechanical properties were investigated using atomic force microscopy (AFM) imaging and AFM nanoindentation. Different sets of polymers were used to produce CSH/polymer nanocomposites. The effect of different factors including dipping time, calcium to silicate ratios (C/S ratios) and pH on morphology was investigated. CSH/polymer nanocomposites made with different sets of polymers showed variation in morphologies. However, the Young’s modulus did not seem to reveal significant differences between the nanocomposites studied here. In nanocomposites containing graphene oxide (GO) nanosheet, an increase in the density of CSH particles was observed on the GO nanosheet compared to areas away from the GO nanosheet, providing evidence for improved nucleation of CSH in the presence of GO nanosheets. An increase in roughness and a reduction in the packing density in nanocomposites containing GO nanosheets was observed.

摘要

采用层层（LBL）法合成了硅酸钙水合物（CSH）/聚合物纳米复合材料，并利用原子力显微镜（AFM）成像和AFM纳米压痕技术研究了其形态和力学性能。使用不同的聚合物组来制备CSH/聚合物纳米复合材料。研究了浸渍时间、钙硅比（C/S比）和pH值等不同因素对形态的影响。用不同聚合物组制备的CSH/聚合物纳米复合材料呈现出不同的形态。然而，杨氏模量在此处研究的纳米复合材料之间似乎没有显示出显著差异。在含有氧化石墨烯（GO）纳米片的纳米复合材料中，与远离GO纳米片的区域相比，在GO纳米片上观察到CSH颗粒密度增加，这为在GO纳米片存在下CSH成核改善提供了证据。在含有GO纳米片的纳米复合材料中观察到粗糙度增加和堆积密度降低。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/791274149210/materials-11-00527-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/787bcccbc70d/materials-11-00527-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/128abf1731b2/materials-11-00527-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/75043ad3888b/materials-11-00527-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/10967aac88e1/materials-11-00527-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/8f649051b1e9/materials-11-00527-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/fddd25225be4/materials-11-00527-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/4f91a605d36e/materials-11-00527-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/831c9ed310d4/materials-11-00527-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/d78660bd0f70/materials-11-00527-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/2a7980c6cb54/materials-11-00527-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/e047b6961f48/materials-11-00527-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/7eda3794ef42/materials-11-00527-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/791274149210/materials-11-00527-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/787bcccbc70d/materials-11-00527-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/128abf1731b2/materials-11-00527-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/75043ad3888b/materials-11-00527-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/10967aac88e1/materials-11-00527-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/8f649051b1e9/materials-11-00527-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/fddd25225be4/materials-11-00527-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/4f91a605d36e/materials-11-00527-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/831c9ed310d4/materials-11-00527-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/d78660bd0f70/materials-11-00527-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/2a7980c6cb54/materials-11-00527-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/e047b6961f48/materials-11-00527-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/7eda3794ef42/materials-11-00527-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8900/5951373/791274149210/materials-11-00527-g013.jpg

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