Colloids and Surfaces A 538 (2018) 86–93 Contents lists available at ScienceDirect Colloids and Surfaces A journal homepage: www.elsevier.com/locate/colsurfa Research paper Low cracking ratio of paraﬃn microcapsules shelled by hydroxyl terminated polydimethylsiloxane modiﬁed melamine-formaldehyde resin Yuqiao Chai, Tianbo Zhao , Xia Gao, Jiaojiao Zhang Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, Beijing 100081, China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: Premature rupture caused by the high hardness and brittleness of melamine-formaldehyde (MF) resin has been a Hydroxyl terminated polydimethylsiloxane problem of MF microcapsules during synthesis and processing. In this work, we successfully encapsulated par- Cracking ratio aﬃn with hydroxyl terminated polydimethylsiloxane(HTPDMS)modiﬁed MF and the eﬀects of HTPDMS dosage Melamine-formaldehyde (MF) resin on the mechanical properties of MF were investigated. The FTIR spectra indicated that HTPDMS modiﬁed MF Paraﬃn microcapsules shell was successfully synthesized. SEM images and PSD results showed that the obtained microcapsules were spherical with smooth surface and an average diameter of 13 μm. The XRD results indicated that the HTPDMS modiﬁed MF shell performed better mechanical toughness, resulting in the cracking ratio of the modiﬁed mi- crocapsules as low as 13.8%. In addition, the HTPDMS modiﬁed MF microcapsules
Geoderma – Elsevier
Published: Feb 15, 2019
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