Pengaruh Bentonit terhadap Pembentukan Fasa Polimorf dan Sifat Termal Membran Hibrida Poliviniliden Fluorida/Bentonit

Edi Pramono, R. Mustofa, Ozi Adi Saputra, Yulianto Adi Nugroho, Deana Wahyunigrum, C. Radiman, Sayekti Wahyuningsih, Teguh Endah Saraswati, Sentot Budi Rahardjo, W. Lestari, Dian Maruto Widjonarko, Ari Handono Ramelan
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Abstract

Kajian struktur dan degradasi termal pada membran hibrida poliviniliden fluorida (PVDF)/lempung bentonit (BNT) telah dilakukan. Penelitian ini bertujuan mengetahui pengaruh penambahan BNT terhadap pembentukan fasa PVDF dan sifat termalnya. Membran hibrida PVDF/lempung BNT dibuat dengan metode inversi fasa. Membran yang dihasilkan dikarakterisasi dengan attenuated total reflectance fourier transform infrared (ATR-FTIR), x-ray diffraction (XRD), dan differential scanning calorimetry (DSC). Hasil penelitian menunjukkan membran PVDF/BNT memiliki struktur polimorf PVDF fasa α dan β yang terkonfirmasi dari data FTIR dan XRD. Data DSC menunjukkan penurunan nilai titik leleh (Tm) dengan penambahan BNT, dan dengan rentang suhu pelelehan yang lebih kecil. Kristalisasi PVDF terjadi secara isothermal dan adanya BNT menghasilkan titik kristalisasi (Tc) pada suhu yang lebih tinggi dibandingkan membran PVDF murni. Analisis termal dengan DSC memberikan informasi komprehensif pelelehan dan kristalisasi dari polimorf PVDF pada matriks membran.Effect of Bentonite toward Polymorph Phase Formation and Thermal Properties of Polyvinylidene Fluoride/Bentonite Hybrid Membranes. The study of the structure and thermal properties of PVDF/bentonite (BNT) hybrid membranes has been carried out. This study aims to determine the effect of BNT addition on the phase formation and thermal properties of the PVDF. In this study, PVDF/BNT hybrid membranes were prepared through the phase inversion method. The resulting membrane was characterized by Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR), x-ray diffraction (XRD), and differential scanning calorimetry (DSC). The results showed that the PVDF/BNT membrane has a PVDF polymorph structure with α and β phases confirmed by FTIR and XRD data. The DSC data showed that the addition of BNT decrease of the melting point (Tm) and with a smaller melting temperature range. PVDF polymorph crystallization occurs isothermally and the presence of BNT produces a crystallization point (Tc) at a higher temperature than pristine PVDF membrane. Thermal analysis with DSC provides comprehensive information on melting and crystallization of PVDF polymorphs in the membrane matrix.
已对聚氨酯-氢氟酸聚氨酯(PVDF)/本节黏膜(BNT)的热结构和降解进行研究。本研究旨在确定BNT对PVDF阶段形成及其热特性的影响。PVDF/ BNT黏膜是用相模法制成的。由此产生的膜被高清全反射对照组(ATR-FTIR)、x射线衍射和不同扫描卡路里(DSC)所定义。研究结果表明PVDF膜- BNT有结构polimorf PVDF阶段确认的α和βFTIR和XRD数据。DSC数据显示,BNT增加、温度下降的熔点值(Tm)有所下降。PVDF结晶是隔离的,BNT的存在会在比纯PVDF膜更高的温度下产生结晶点(Tc)。DSC的热分析提供了膜矩阵PVDF波形态融化和结晶的全面信息。苯乙烯基对多变相变和热特性多变温和素混合膜的影响。关于PVDF/bentonite混合膜的研究和热特性已经被考虑在内。这项研究旨在确定PVDF相位和热性能上的BNT影响。在这项研究中,PVDF/BNT混合膜正在准备通过相位逆转的方法。再生膜被傅里叶成绩单、x射线折射和不同峡谷扫描(DSC)所影响。《PVDF - BNT results那里那个主唱有a PVDF polymorph vesaliusα和βphases确认被FTIR和XRD数据。DSC数据显示了融化点的附加量(Tm)和一个更大的温度变化。PVDF多态性隐化和BNT产品在比原始PVDF膜更高的温度下的存在。热分析与DSC分解相关信息,关于膜矩阵中的PVDF多变。
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