Projekt per år
Sammanfattning
The present study focuses on enhancing the thermomechanical properties of poly(methyl methacrylate) (PMMA), a transparent and biocompatible polymer known for its high strength but limited toughness. The approach involves the development of PMMA/cellulose nanocrystals (CNCs) composites. To improve the interfacial compatibility between PMMA and CNCs, a two-step process is employed. Initially, the CNCs undergo oxidation using sodium periodate, followed by the introduction of amino groups through reductive amination. The aminated CNCs are then covalently bonded to PMMA via an amidation reaction using the “grafting onto” approach. Subsequently, the grafted CNCs are incorporated into the PMMA matrix using the solvent casting method. The resulting composites are extruded into filaments. Elemental composition analysis confirms CNC modification, revealing the presence of 1.6% nitrogen. The modified CNCs exhibit a higher degradation temperature than unmodified CNCs, showing a 50°C increase. The composites' dynamic mechanical analysis (DMA) reveals a 20% improvement in storage modulus (E′) upon incorporating 1.5% of the grafted CNCs into the PMMA matrix. This enhancement is attributed to the formation of co-continuous phases in the composite structure.
Originalspråk | Engelska |
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Artikelnummer | e55273 |
Antal sidor | 14 |
Tidskrift | Journal of Applied Polymer Science |
Volym | 141 |
Nummer | 17 |
DOI | |
Status | Publicerad - 5 maj 2024 |
MoE-publikationstyp | A1 Tidskriftsartikel-refererad |
Fingeravtryck
Fördjupa i forskningsämnen för ”Compatibilization of poly(methyl methacrylate) and cellulose nanocrystals through co-continuous phase to enhance the thermomechanical properties”. Tillsammans bildar de ett unikt fingeravtryck.Utrustning
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Åbo Akademi Functional Printing Center
Toivakka, M. (PI), Rosenholm, J. (PI), Anttu, N. (PI), Bobacka, J. (PI), Huynh, T. P. (PI), Peltonen, J. (PI), Wang, X. (PI), Wilen, C.-E. (PI), Xu, C. (PI), Zhang, H. (PI) & Österbacka, R. (PI)
Fakulteten för naturvetenskaper och teknikUtrustning/facilitet: Facilitet
Projekt
- 1 Aktiv
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SusCellInk: Sustainable nanocellulose-based bioinks towards diverse material functionalities and therapeutic delivery of bioactive cues
Wang, X. (Ansvarig forskare)
01/09/20 → 31/08/25
Projekt: Finlands Akademi/Övriga Forskningsråd