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Yopan Rahmad Aldori
Universitas Medan Area
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Journal : Teknomekanik

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Uniaxial and biaxial hot pressing of PVDF films: A pathway toward high-performance piezoelectric sensors and energy harvesters Suprapto, Suprapto; jubaidah, Jubaidah; Triono, Selamat; Gunawan, Harianto; Lisyanto, Lisyanto; Nugraha, Aditya Sukma; Aldori, Yopan rahmad
Teknomekanik Vol. 9 No. 1 (2026): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v9i1.44972

Abstract

The piezoelectric efficiency of Poly (vinylidene fluoride) (PVDF) membranes becomes restricted by the challenge of generating and stabilizing electroactive β-phase during processing. Stretching requires control of deformation parameter, while solvent-based methods bring environmental and occupational health risks. This research suggests hot-pressing as an alternative method for enhancing β-phase fraction, utilizing multidirectional stress without solvent or chemical exposure. This study systematically compares uniaxial hot-pressing (Uniaxial HP) and biaxial hot-pressing (Biaxial HP) setups to determine which stress distribution is more effective at promoting changes and improving piezoelectric properties in PVDF membranes. The main objective of this research is to systematically evaluate and compare the impacts of uniaxial and biaxial hot-pressing on the crystalline phase transformation and electromechanical performance, including the piezoelectric coefficient (d33) and output voltage response of PVDF membranes. PVDF pellets were hot-pressed at 220o C under a pressure of 60 MPa for 15 minutes followed by rapid quenching in ice water. X-Ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) confirmed phase composition, correlated with performance via the piezoelectric coefficient (d33), and assessed piezoelectric activity. Experimental results show that biaxial loading provides a higher b-phase fraction (50.47%) compared to untreated membranes (47.80%) and UHP samples (49.30%). The crystallinity and the piezoelectric coefficient also increased to 49% and 18.8 pC/N, respectively. Biaxial stress pattern during hot-pressing induces favourable thermodynamic and kinetic conditions for b-phase expansion. Beyond phase-related results, the approach delivers competitive piezoelectric effectiveness while maintaining simplicity and reducing solvent-dependent processing steps.
Co-Authors Abd Rahman Bin Dullah Adly Zulqarnain bin Mohamad Andri Herlambang Ardaha, Mhd. Taufik Ariyudha, Andhika Arya Rudi Nasution Aryanta Sembiring, Robi Binsar Panjaitan, Binsar Bobby Umroh Darianto, Darianto Darwin, Felix Derlini Diansyah, Diansyah Din Aswan Amran Ritonga Eka Daryanto, Eka Erni Yusnita Etanto Heiliano Wijayanto Faddillah, Fahmi Farsa, Fadhli Faruqi, Muhammad Dava Fider Lumbanbatu Firmansyah Nasution, Taufik Giovan Panjaitan, Asido Girsang, Evan Roland Gunawan, Harianto Habib Satria Handoko, Ari Harahap, Uun Novalia Hasibuan, Samsul Abdul Rahman Sidik HENRY ISKANDAR Hermansyah Hermasnyah Ida Royani INDRA HERMAWAN Indra Hermawan Iqbal, Mhd. Iswandi Iswandi Iswandi Iswandi Jubaidah Jubaidah Jubaidah, Jubaidah Jufrizal Jufrizal Jufrizal Jufrizal JUNAIDI Listiyanto, Listiyanto Lisyanto . Maghfirah Maghfirah Marwan Marwan Masrajuddin, Masrajuddin Meidiansyah, Fadli Mislan Moerni, Saufa Yardha Muhammad Abdul Rasyid Muhammad Idris Muhammad Idris Muhammad Irwanto Muhammad Yusuf Rahmansyah Siahaan Muhathir, Muhathir Pangestu, Reno Prabowo, Yoga Pranata, Hadi Pratiwi Putri Lestari Prayoga, Muhammad Angga R. Nurfazriah, Latifah Rambe, Yunita Syafitri Recsi Febian Adiansyah Riana Puspita, Riana Rizki Muliono Ruztamreen Bin Jenal Sandi Saputra Selamat Riadi Selamat Triono, Selamat Sembiring, Bagus Suranta Setyanto, Nova Arief Sianturi, Danial Jack Marbis Sinaga, Willyam Warikson Siswo Pranoto Sugiono, Didik Sukma Aditya Sukmawati Supardi Supardi Suprapto Suprapto Suprapto Suprapto Supriatno, Supriatno Susilawati, Susilawati Syahra, Assyfa Syurkarni Ali Taufik Wal Hidayat, Taufik Wal Tika Ermita Wulandari Tino Hermanto Tumangger, Theo Fredrik Zarmawan, Husri