Pregled bibliografske jedinice broj: 598165
Influence of Nanosilica on the Morphology and Thermal and Mechanical Properties of Polyurethane Elastomer
Influence of Nanosilica on the Morphology and Thermal and Mechanical Properties of Polyurethane Elastomer // Journal of applied polymer science, 125 (2012), S1; E181-E190 doi:10.1002/app.36290 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 598165 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Influence of Nanosilica on the Morphology and Thermal and Mechanical Properties of Polyurethane Elastomer
Autori
Lučić Blagojević, Sanja ; Buhin, Zrinka ; Pustak, Anđela ; Lukić Kovačić, Ružica
Izvornik
Journal of applied polymer science (0021-8995) 125
(2012), S1;
E181-E190
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
composites PUR/silica; silane-modified fumed silica; morphology; thermal properties; mechanical properties
Sažetak
In this article, the influence of fumed silica nanofiller on the structure and properties of segmented polyurethane elastomer (PUR) was investigated. In order to investigate the interactions at the filler–matrix interface, nonmodified and commercially modified fillers (with methacrylsilane and octylsilane) were used. The PUR composites with 1.0, 2.0, 4.0, 6.0, and 9.0 vol % of all fillers were prepared by solution casting method. Surface free energy of the fillers and polymer matrix was determined using contact angle measurements with different testing liquids. Change in morphology was analyzed using optical polarization microscopy and distribution of the filler in polymer matrix using scanning electron microscopy. The influences of silica fillers on mechanical and thermal properties of PUR were investigated. Results showed that surface treatment of silica filler with methacrylsilane and octylsilane reduces the agglomeration of particles that improves dispersion at microlevel. Addition of all fillers disrupts spherulite morphology and decreases crystallinity of the PUR matrix. Nonmodified silica nanofiller has the least pronounced influence on spherulite morphology and the lowest influence on polyurethane crystallinity and thus the best mechanical properties. Surface modification of silica with octylsilane has less influence on polyurethane crystallinity and on decreasing of mechanical properties than modification with methacrylsilane.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
Napomena
Special Issue: Composites with Inorganic Fillers.
POVEZANOST RADA
Projekti:
098-0982904-2955 - Odnosi struktura-svojstvo modificiranih polimernih materijala (Pucić, Irina, MZOS ) ( CroRIS)
125-1252971-2575 - Inženjerstvo površina i međupovršina nanočestica u adhezijskim nanomaterijalima (Leskovac, Mirela, MZOS ) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb,
Fakultet kemijskog inženjerstva i tehnologije, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
