832710.fig.004a
(a)
832710.fig.004b
(b)
832710.fig.004c
(c)
832710.fig.004d
(d)
Figure 4: (a) Typical size distribution of SF/PNIPAAm aggregates which remained at  nm during the first 12 h after mixing of two polymers. (b) Upon gelation, the size of SF/PNIPAAm aggregates increased slightly to  nm, and the size distribution profile does not change with varied temperature. ((c)-(d)) During early stage of gelation process, SF/PNIPAAm aggregates increased in size with elevated temperature and wider size distribution profile can be observed. for 28°C; for 30°C.