Polymer/organically modified layere

Polymer/organically modified layered silicate (PLS) nanocomposites are a new class of filled polymers with ultrafine phase dimensions. They offer an outstanding combination of stiffness, strength and weight that is difficult to attain separately from the individual components. Additionally, the nanoscopic phase distribution as well as synergism between polymer and the layered silicate result in additional properties, such as flame retardency, enhanced barrier properties and ablation resistance, which are not observed in either component. These nanocomposites are synthesized by blending the organically modified layered silicate (OLS) into the polymer melt. Thus, understanding the relationship between the molecular structure and the thermal stability (decomposition temperature, rate, and the degradation products) of the organic modification of the layered silicate is critical. During this study, modern thermal analysis techniques combined with infrared spectroscopy and mass spectrometry (TGA-FTIR-MS) were used to obtain information on the thermal stability and degradation products. The effect of chemical variation (alkyl chain length, number of alkyls, and unsaturation) of organic modifiers on the thermal stability of the organically exchanged montmorillonite are discussed. A range of interesting results is observed, however, not all are currently understandable.

Hasil (Bahasa Indonesia) 1:

Nanocomposites diubah polimer/organik berlapis silikat (PLS) adalah kelas baru polimer diisi dengan dimensi ultrafine fase. Mereka menawarkan sebuah kombinasi yang luar biasa dari kekakuan, kekuatan dan berat yang sulit untuk mencapai secara terpisah dari komponen individual. Selain itu, nanoscopic tahap distribusi serta sinergi antara polimer dan berlapis silikat mengakibatkan sifat tambahan, seperti retardency nyala api, ditingkatkan penghalang properti dan ablasi resistensi, yang tidak diamati dalam komponen baik. Nanocomposites ini disintesis oleh pencampuran silikat berlapis organik diubah (OLS) ke dalam polimer meleleh. Dengan demikian, memahami hubungan antara struktur molekul dan stabilitas termal (suhu dekomposisi, tingkat, dan hasil degradasi) modifikasi organik silikat berlapis sangat penting. Selama ini penelitian, analisis modern termal teknik dikombinasikan dengan Spektroskopi Inframerah dan spektrometri massa (TGA-FTIR-MS) digunakan untuk mendapatkan informasi mengenai produk stabilitas dan degradasi termal. Efek dari variasi kimia (panjang rantai alkil, jumlah alkyls, dan unsaturation) organik pengubah pada stabilitas termal mineral-montmorilonite organik bertukar akan dibahas. Berbagai hasil yang menarik diamati, namun, tidak semua saat ini dapat dimengerti.