Transient Fiber Mats of Electrospun Poly(Propylene Carbonate) Composites with Remarkable Mechanical Strength
| Autor: | Amanda K. Leonardi, Peter Ohlendorf, Ian Bruce, Chengjian Shi, Christopher K. Ober, Amit Lal, Christine Cuppoletti, Alexander Ruyack |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Materials science Nanocomposite Base (chemistry) 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Decomposition 0104 chemical sciences chemistry.chemical_compound chemistry Surface-area-to-volume ratio Propylene carbonate General Materials Science Fiber Composite material 0210 nano-technology Shrinkage |
| Zdroj: | ACS Applied Materials & Interfaces. 9:25495-25505 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.7b04710 |
| Popis: | Polymers with a triggered decomposition are attractive for an array of applications ranging from patterning to transient packaging materials, as well as for environmental protection. This work showed for the first time UV and thermally triggered transience in fiber mats using poly(propylene carbonate) (PPC) composites. The electrospun PPC-composite fiber mats combine excellent decomposition performance (because of the high surface to volume ratio) with high stiffness and thus represent a new class of materials enabling innovative applications, such as transient filter materials and short-time plant protection materials, as well as temporary lightweight materials for aerospace engineering. Thermally and UV-triggerable additives (protected acids or base) have been used in different concentrations to tune the transience performance of the fiber mats over a wide range (75-212 °C). The addition of organo-modified clay (OMMT) enhanced mechanical stability and prevented shrinkage at room temperature. Different annealing methods have been used to improve the mechanical properties even further (tensile strength = 2-12 MPa, Young's modulus = 55-747 MPa) making these fiber mats attractive for a broad field of applications. An Ashby plot of Young's modulus versus degradation temperature for electrospun fiber mats is shown, revealing much lower degradation temperatures with higher moduli for PPC composites compared to other electrospun polymers. |
| Databáze: | OpenAIRE |
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