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Shape Memory Effects Using Magnetoactive Boron−Organo−Silicon Oxide Polymers
Author(s) -
Prem Nina,
Sindersberger Dirk,
Striegl Birgit,
Böhm Valter,
Monkman Gareth J.
Publication year - 2020
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.202000149
Subject(s) - shape memory polymer , materials science , boron , polymer , mold , silicon , thermal stability , shape memory alloy , silicon oxide , composite material , viscoelasticity , oxide , mechanical engineering , nanotechnology , chemical engineering , optoelectronics , metallurgy , chemistry , engineering , organic chemistry , silicon nitride
Thermomechanical shape memory materials have certain disadvantages when it comes to 3D volumetric reproduction intended for rapid prototyping or robotic prehension. The need to constantly supply energy to counteract elastic retraction forces in order to maintain the required geometry, together with the inability to achieve conformal stability at elevated temperatures, limits the application of thermal shape memory polymers. Form removal also presents problems as most viscoelastic materials do not ensure demolding stability. This work demonstrates how magnetoactive boron−organo−silicon oxide polymers under the influence of an applied magnetic field can be used to achieve energy free sustainable volumetric shape memory effects over extended periods. The rheopectic properties of boron−organo−silicon oxide materials sustain form removal without mold distortion.