Free-Standing and Self-Crosslinkable Hybrid Films by Core-Shell Particle Design and Processing.
Free-Standing and Self-Crosslinkable Hybrid Films by Core-Shell Particle Design and Processing.
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DOI：
10.3390/nano7110390
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发表时间：
2017-11-15
期刊：
影响因子：
--
通讯作者：
Gallei M
中科院分区：
文献类型：
--
作者：
Vowinkel S;Paul S;Gutmann T;Gallei M
用于光学传感应用和膜的功能性混合薄膜的利用和制备至关重要。在这项工作中，我们报告了通过烷氧基硅烷基交联剂的定向自组装作为核壳颗粒结构的一部分而衍生的自交联颗粒基薄膜的方便且可扩展的制备方法。通过乳液聚合合成精心设计的单分散核壳颗粒是通过熔体剪切组织技术进行后续颗粒加工的基本前提。更详细地说，核颗粒由聚苯乙烯（PS）或聚（甲基丙烯酸甲酯）（PMMA）组成，而相对较软的颗粒壳由聚（丙烯酸乙酯）（PEA）和不同的烷氧基硅烷基聚（甲基丙烯酸酯）组成。为了形成杂化膜和方便的自交联，通过固态魔角旋转核磁共振（MAS，NMR）光谱详细研究了硅氧烷部分的不同烷基，揭示了不同的交联能力，这强烈影响核或壳颗粒膜在透明度和虹彩反射颜色方面的性能。此外，固态核磁共振波谱和通过差示扫描量热法 (DSC) 测量进行的热性能研究可以深入了解合成之前和之后以及热和压力诱导的加工步骤之后的交联能力。随后，通过应用熔体剪切组织技术获得了具有优异颗粒有序性的自交联颗粒薄膜，如显微镜（TEM、SEM）所示。
The utilization and preparation of functional hybrid films for optical sensing applications and membranes is of utmost importance. In this work, we report the convenient and scalable preparation of self-crosslinking particle-based films derived by directed self-assembly of alkoxysilane-based cross-linkers as part of a core-shell particle architecture. The synthesis of well-designed monodisperse core-shell particles by emulsion polymerization is the basic prerequisite for subsequent particle processing via the melt-shear organization technique. In more detail, the core particles consist of polystyrene (PS) or poly(methyl methacrylate) (PMMA), while the comparably soft particle shell consists of poly(ethyl acrylate) (PEA) and different alkoxysilane-based poly(methacrylate)s. For hybrid film formation and convenient self-cross-linking, different alkyl groups at the siloxane moieties were investigated in detail by solid-state Magic-Angle Spinning Nuclear Magnetic Resonance (MAS, NMR) spectroscopy revealing different crosslinking capabilities, which strongly influence the properties of the core or shell particle films with respect to transparency and iridescent reflection colors. Furthermore, solid-state NMR spectroscopy and investigation of the thermal properties by differential scanning calorimetry (DSC) measurements allow for insights into the cross-linking capabilities prior to and after synthesis, as well as after the thermally and pressure-induced processing steps. Subsequently, free-standing and self-crosslinked particle-based films featuring excellent particle order are obtained by application of the melt-shear organization technique, as shown by microscopy (TEM, SEM).
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影响因子：
4.4
作者：
BENNETT, AE;RIENSTRA, CM;GRIFFIN, RG
通讯作者：
GRIFFIN, RG
影响因子：
4.6
作者：
Bounor-Legaré, V;Angelloz, C;Michel, A
通讯作者：
Michel, A
影响因子：
29.4
作者：
Lee, Jae-Hwang;Koh, Cheong Yang;Singer, Jonathan P.;Jeon, Seog-Jin;Maldovan, Martin;Stein, Ori;Thomas, Edwin L.
通讯作者：
Thomas, Edwin L.
DOI：
10.3390/nano5020468
发表时间：
2015-04-01
期刊：
Nanomaterials (Basel, Switzerland)
影响因子：
--
作者：
Mera G;Gallei M;Bernard S;Ionescu E
通讯作者：
Ionescu E
影响因子：
8.6
作者：
JOHN, S
通讯作者：
JOHN, S