Title of article :
Porous inorganic–organic shape memory polymers
Author/Authors :
Zhang، نويسنده , , Dawei and Burkes، نويسنده , , William L. and Schoener، نويسنده , , Cody A. and Grunlan، نويسنده , , Melissa A.، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2012
Pages :
7
From page :
2935
To page :
2941
Abstract :
Thermoresponsive shape memory polymers (SMPs) are a type of stimuli-sensitive materials that switch from a temporary shape back to their permanent shape upon exposure to heat. While the majority of SMPs have been fabricated in the solid form, porous SMP foams exhibit distinct properties and are better suited for certain applications, including some in the biomedical field. Like solid SMPs, SMP foams have been restricted to a limited group of organic polymer systems. In this study, we prepared inorganic–organic SMP foams based on the photochemical cure of a macromer comprised of inorganic polydimethylsiloxane (PDMS) segments and organic poly(ε-caprolactone) (PCL) segments, diacrylated PCL40-block-PDMS37-block-PCL40. To achieve tunable pore size with high interconnectivity, the SMP foams were prepared via a refined solvent-casting/particulate-leaching (SCPL) method. By varying design parameters such as degree of salt fusion, macromer concentration in the solvent and salt particle size, the SMP foams with excellent shape memory behavior and tunable pore size, pore morphology, and modulus were obtained.
Keywords :
Porous materials , Polymeric materials , Shape memory materials
Journal title :
Polymer
Serial Year :
2012
Journal title :
Polymer
Record number :
1739105
Link To Document :
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