Post-polymerization of urease-induced calcified, polymer hydrogels.
Post-polymerization of urease-induced calcified, polymer hydrogels.
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脲酶诱导的钙化聚合物水凝胶的后聚合。
DOI：
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发表时间：
2015
影响因子：
4.6
通讯作者：
J. C. Tiller
中科院分区：
文献类型：
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作者：
N. Rauner;L. Buenger;Stefanie Schuller;J. C. Tiller
尿素酶诱导钙化是一种通过水凝胶的内在矿化作用人工制备高度填充的碳酸钙基复合材料的创新方法。这些杂化材料的基础上的聚（2-羟乙基丙烯酸酯）交联的三甘醇二甲基丙烯酸酯的机械性能差。将钙化程度增加到高达94重量%将材料的杨氏模量（YM）从约40 MPa提高到超过300 MPa。分别通过共聚丙烯酸和[2-（甲基丙烯酰氧基）乙基]三甲基氯化铵将碳酸钙仿射基团引入到水凝胶基质中，不增加复合材料的刚度。通过钙化水凝胶的后聚合（PP）实现了超过1GPa的杨氏模量，这证明基质与碳酸钙晶体之间的接触面积大小是控制混合材料刚度的最关键参数。从低Tg到高Tg水凝胶基质（基于聚（N，N-二甲基丙烯酰胺））的切换导致PP后的YM高达3.5 GPa。
Urease-induced calcification is an innovative method to artificially produce highly filled CaCO3-based composite materials by intrinsic mineralization of hydrogels. The mechanical properties of these hybrid materials based on poly(2-hydroxyethylacrylate) cross-linked by triethylene glycol dimethacrylate are poor. Increasing the degree of calcification to up to 94 wt% improves the Young's moduli (YM) of the materials from some 40 MPa to more than 300 MPa. The introduction of calcium carbonate affine groups to the hydrogel matrix by copolymerizing acrylic acid and [2-(methacryloyloxy) ethyl]trimethylammonium chloride, respectively, does not increase the stiffness of the composites. A Young's modulus of more than 1 GPa is achieved by post-polymerization (PP) of the calcified hydrogels, which proves that the size of the contact area between the matrix and calcium carbonate crystals is the most crucial parameter for controlling the stiffness of hybrid materials. Switching from low Tg to high Tg hydrogel matrices (based on poly(N,N-dimethyl acrylamide)) results in a YM of up to 3.5 GPa after PP.
影响因子：
14
作者：
Grassmann, O;Löbmann, P
通讯作者：
Löbmann, P
八珊瑚骨片超微结构和基本生物矿化原理的实验方法
影响因子：
3.1
作者：
Sethmann I;Helbig U;Wörheide G
通讯作者：
Wörheide G