نوع مقاله: تالیفی
نویسندگان
1 گروه مهندسی پلیمر، دانشکده مهندسی شیمی، دانشگاه صنعتی اصفهان، اصفهان، ایران
2 عضو هیئت علمی، گروه مهندسی پلیمر، دانشکده مهندسی شیمی، دانشگاه صنعتی اصفهان، اصفهان، ایران
3 گروه مهندسی مواد وپلیمر، دانشکده مهندسی، دانشگاه حکیم سبزواری، سبزوار، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Nowadays, the microencapsulation of materials is used extensively in different
fields and industries including agriculture, food and pharmaceuticals, coatings,
and cosmetics. One of the most important applications of microcapsules is preparation
of self-healing polymer composites. Poly(urea-formaldehyde) (PUF) microcapsules have
received a lot of attention due to their suitable properties in the preparation of these
systems. However, in some cases, these microcapsules do not have the ability to interact
properly with the polymer matrix. As a result, they reduce the mechanical properties of
the matrix as well as prevent the proper transfer of applied stress to the microcapsules
(and thus reduce self-healing performance). Modification of microcapsules in order to
reinforce the interaction of the matrix-microcapsule as well as improving their properties
is an effective approach to decrease the mechanical properties reduction and improve
stress transfer to the microcapsules. According to the literature, the modification methods
of PUF microcapsules can be classified into 4 main groups including; modification
via silane coupling agents, modification during synthesis, modification by using
nanoparticles, and preparation of multishell microcapsules via layer-by-layer deposition
method. In this review, microcapsules and factors affecting their effectiveness, methods
of encapsulation, and microcapsule based self-healing systems are explained briefly.
PUF microcapsules and their modification methods are also discussed.
کلیدواژه‌ها [English]
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