کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5210983 | 1382930 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of macromolecular architecture on the micellization behavior of complex block copolymers
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of macromolecular architecture on the micellization behavior of complex block copolymers Effects of macromolecular architecture on the micellization behavior of complex block copolymers](/preview/png/5210983.png)
چکیده انگلیسی
The effect of macromolecular architecture on the aggregative behavior of A-B block copolymers with different complex structures in selective solvents was studied by Dissipative Particle Dynamics. We focus on two types of diblock copolymers, (I) asymmetric linear diblocks ByAx and (II) miktoarm stars (By)n(Ax)m, where A block is solvophilic and B block solvophobic. Note that y and x are the block lengths of A and B blocks; n and m denote arm numbers of A and B blocks in the star. For type I linear copolymer with a given ratio of y/x, the aggregation number
varies with the total length (x + y) for y/x > 1 but is essentially independent of the total length for y/x ⩽ 1. For type II star copolymer with m · x = 24 and n · y = 24, the aggregation number varies with the branch number m at a given number of solvophobic blocks n. There exists a minimum aggregation number at m â 4 so that
declines first and then grows with increasing the branch number. Moreover,
increases as the polymer concentration is increased. Our simulation results indicate that at a given chemical composition, the micelle properties such as aggregation number and micellar morphology may vary with the macromolecular architecture.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 69, Issue 7, July 2009, Pages 539-545
Journal: Reactive and Functional Polymers - Volume 69, Issue 7, July 2009, Pages 539-545
نویسندگان
Chun-Min Lin, Yo-Zen Chen, Yu-Jane Sheng, Heng-Kwong Tsao,