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Preparation of Polymer‐Based Nanocomposites Composed of Sustainable Organo‐Modified Needlelike Nanoparticles and Their Particle Dispersion States in the Matrix
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2019-12-10 , DOI: 10.1002/pen.25310
Shuhei Hirayama 1 , Takuto Hayasaki 2 , Rei Okano 3 , Atsuhiro Fujimori 1
Affiliation  

Polymer‐based nanohybrid materials were created using sustainable sepiolite clay composed from ubiquitous elements. Although sepiolite is generally recognized as a fibrous natural clay mineral, it turned out to be an acicular microcrystal because of the organo‐modification of the outermost surface. Surface modification was performed using phosphonic acid derivatives containing hydrocarbon chains or fluorocarbon chains. Formation of a bidentate bond enhanced the desorption temperature and made nanocomposite preparation possible by melt compounding with polymers having a high melting point. As a result of organo‐modification, amphiphilic sepiolite was obtained, and nanodispersion in an organic solvent was achieved. This technology was useful for detailed evaluation of sepiolite morphology. The nanocomposite of crystalline polymers/organo‐modified sepiolites achieved uniform dispersion of these nanofillers in the matrix polymer. The introduction of 1 wt% nanofillers did not impair the transparency of the matrix polymer. As a result, a lamellae structure of the polymer developed, the crystallinity increased, and the mechanical properties improved. In addition, the crystallization temperature was improved, indicating that organo‐modified sepiolites may act as a nucleating agent. It was found that sepiolite nanofiller with a highly aggregated tendency can achieve a well‐nanodispersed state, even in phase‐separable fluoropolymers, by applying fluorocarbon modification. POLYM. ENG. SCI., 60:541–552, 2020. © 2019 Society of Plastics Engineers

中文翻译:

可持续的有机修饰的针状纳米颗粒及其在基质中的分散状态组成的聚合物基纳米复合材料的制备

基于聚合物的纳米混合材料是使用由无处不在的元素组成的可持续的海泡石粘土制成的。尽管海泡石通常被认为是纤维状天然粘土矿物,但由于最外层表面的有机改性,它被证明是针状微晶。使用包含烃链或碳氟化合物链的膦酸衍生物进行表面改性。双齿键的形成提高了解吸温度,并且通过与具有高熔点的聚合物熔融混合而使纳米复合材料的制备成为可能。有机改性的结果是,获得了两亲海泡石,并实现了在有机溶剂中的纳米分散。该技术对于海泡石形态的详细评估很有用。晶体聚合物/有机改性海泡石的纳米复合材料实现了这些纳米填料在基质聚合物中的均匀分散。引入1重量%的纳米填料不会损害基质聚合物的透明性。结果,形成了聚合物的层状结构,结晶度增加,并且机械性能提高。此外,结晶温度得到了改善,表明有机改性的海泡石可以充当成核剂。结果发现,具有高度聚集趋势的海泡石纳米填料,即使在相分离的含氟聚合物中,也可以通过碳氟化合物改性而达到良好的纳米分散状态。POLYM。ENG。SCI。,60:541–552,2020.©2019塑料工程师协会 引入1重量%的纳米填料不会损害基质聚合物的透明性。结果,形成了聚合物的层状结构,结晶度增加,并且机械性能提高。此外,结晶温度得到了改善,表明有机改性的海泡石可以充当成核剂。已发现,具有高度聚集趋势的海泡石纳米填料,即使在可相分离的含氟聚合物中,也可以通过应用碳氟化合物改性而达到良好的纳米分散状态。POLYM。ENG。SCI。,60:541–552,2020.©2019塑料工程师协会 引入1重量%的纳米填料不会损害基质聚合物的透明性。结果,形成了聚合物的层状结构,结晶度增加,并且机械性能提高。此外,结晶温度得到了改善,表明有机改性的海泡石可以充当成核剂。结果发现,具有高度聚集趋势的海泡石纳米填料,即使在相分离的含氟聚合物中,也可以通过碳氟化合物改性而达到良好的纳米分散状态。POLYM。ENG。SCI。,60:541–552,2020.©2019塑料工程师协会 结晶温度得到改善,表明有机改性海泡石可以充当成核剂。已发现,具有高度聚集趋势的海泡石纳米填料,即使在可相分离的含氟聚合物中,也可以通过应用碳氟化合物改性而达到良好的纳米分散状态。POLYM。ENG。SCI。,60:541–552,2020.©2019塑料工程师协会 结晶温度得到改善,表明有机改性海泡石可以充当成核剂。已发现,具有高度聚集趋势的海泡石纳米填料,即使在可相分离的含氟聚合物中,也可以通过应用碳氟化合物改性而达到良好的纳米分散状态。POLYM。ENG。SCI。,60:541–552,2020.©2019塑料工程师协会
更新日期:2019-12-10
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