نوع مقاله: تالیفی
نویسندگان
1 زنجان، دانشگاه تحصیلات تکمیلی علوم پایه زنجان، دانشکده شیمی، صندوق پستی 1159-45195
2 هیات علمی/دانشگاه تحصیلات تکمیلی علوم پایه زنجان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Self-healing polymers can spontaneously repair cracks or fractures themselves that
this property increases their service life. Propagation of the microcracks in polymer
structures may leads to material failure, so the research on self-healing polymeric materials
have attracted significant attention. The fundamental mechanism for self-healing polymeric
materials involves reversible damage-restoring bonds. Usually external stimuli is required
to repair the damaged bonds and self-healing process. There is a number of influential
parameters on self-healing behaviors, including healing efficiency (a ratio of mechanical
property measured after and before healing), healing rate, healing times at the same fracture
point, and storage time (after which the broken parts still show the healing property). Hostguest
interactions occur when two or more chemical species interact with each other via
non-covalent bonds. In supramolecular host-guest interactions, one moiety (the guest)
is physically inserted to another moiety (the host) and is held together by non-covalent
interactions. Since the interactions are reversible, polymer networks constructed by such
interactions can exhibit self-healing properties. Cyclodextrins are suitable resources for
preparation of the host-guest interactions because of their biocompatibility, good solubility
and the ability for chemical surface modification. The purpose of this paper is to investigate
the characteristics, mechanisms and different methods for synthesis of self-healing polymer
hydrogels.
کلیدواژهها [English]
)