The broken out and confinement phase separation structure evolution with the solution aggregation and relative crystallization degree in P3HT/N2200
The broken out and confinement phase separation structure evolution with the solution aggregation and relative crystallization degree in P3HT/N2200
复制标题
P3HT/N2200中破裂和限制相分离结构随溶液聚集和相对结晶度的演变
DOI：
10.1016/j.polymer.2018.01.059
复制
发表时间：
2018-02
期刊：
影响因子：
4.6
通讯作者：
Yanchun Han
中科院分区：
文献类型：
--
作者：
Rui Zhang;Ye Yan;Hua Yang;Xinhong Yu;Jiangang Liu;Jidong Zhang;Yanchun Han
研究了晶化/晶化多晶中相分离结构的演化过程，即限制和爆发现象，（3-己基噻吩）（P3 HT）和聚[[N，N-双（2-辛基十二烷基）-萘-1，4，5，8-双（二甲酰亚胺）-2，6-二基]- alt-5，5′-[（2，2 ′-联噻吩）]（N2200）共混物的聚合物溶液聚集行为和各组分的相对结晶度控制。在本研究中，选择了两种不同分子量的P3 HT，Mw = 6 kDa和Mw = 55 kDa，并与N2200共混作为模型系统。不同分子量的P3 HT在共混膜中的结晶能力不同。两种聚合物共混物在良溶剂氯仿（CF）中可以形成类似的相分离。通过引入边缘溶剂和热退火来改变聚合物溶液的聚集行为和两组分的相对结晶度。一方面，当加入对二甲苯（pX）作为共溶剂以增加P3 HT分子的聚集时，对于P3 HT（Mw = 6 kDa）/N2200，P3 HT相打破了N2200相的限制，而在P3 HT（Mw = 55 kDa）/N2200中几乎没有变化。另一方面，在热退火期间，P3 HT分子在P3 HT（Mw = 6 kDa）/N2200中具有比在P3 HT（Mw = 55 kDa）/N2200中更强的分子移动能力（P3 HT（Mw = 6 kDa）/N2200和P3 HT（Mw = 55 kDa）/N2200中这两种聚合物的相对结晶度分别为142和3）。P3 HT（Mw = 6 kDa）/N2200体系的初始相分离由于两组分结晶程度的不匹配而被有效破坏，在热退火过程中形成了大尺寸的纤维状相分离。而P3 HT（Mw = 55 kDa）/N2200体系的相分离基本保持不变，且P3 HT分子可以部分有序排列，这可能是由于两种聚合物的结晶度几乎一致。结果表明，在不同的相对结晶度下，吉布斯自由能是控制相分离的主要因素。而不同的链缠结行为可能是形态稳定性的主要来源。
The phase separation structure evolution process, i.e. confinement and broke out phenomenon in crystallization/crystallization poly (3-hexylthiophene) (P3HT) and poly [[N,N-bis(2-octyldodecyl)-napthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]- alt-5, 5′-(2,2′-bithiophene)] (N2200) blends were controlled by the polymer solution aggregation behavior and relative crystallization degree of each component. In this study, two different molecular weight of P3HT, Mw = 6 kDa and Mw = 55 kDa were selected and blend with N2200 as the model systems. Different molecular weight of P3HT had different crystalline ability in blend films. A similar phase separation of both two polymer blends could form in good solvent chloroform (CF). Marginal solvents and thermal annealing were employed to change the polymer solution aggregation behavior and relative crystallization degree of the two components. On one hand, when p-xylene (pX) was added as the co-solvent to increase the aggregation of P3HT molecules, for P3HT (Mw = 6 kDa)/N2200, the P3HT phase broke the restriction of N2200 phase while there was almost unchanged in P3HT (Mw = 55 kDa)/N2200. On the other hand, during thermal annealing, the P3HT molecule had a stronger molecular moving ability in P3HT (Mw = 6 kDa)/N2200 than that in P3HT (Mw = 55 kDa)/N2200 (the relative crystallization degree of these two polymers in P3HT (Mw = 6 kDa)/N2200 and P3HT (Mw = 55 kDa)/N2200 are 142 and 3, respectively). The pristine phase separation of P3HT (Mw = 6 kDa)/N2200 was destroyed effectively due to the unmatched crystallization degree of the two components and large sized fibrous phase separation was formed during thermal annealing. However, the pristine phase separation was almost unchanged in P3HT (Mw = 55 kDa)/N2200, and the P3HT molecule could partly ordered arrangement, which probably come from the almost matched crystallization degree of these two polymers. The results indicate that it is the Gibbs free energy that controls the phase separation in different relative crystallization degree. And different chain entanglements behavior was likely to be the main source of the morphological stability.
登录
查看更多内容
影响因子：
5.5
作者：
Weichao Shi;Xu-Ming Xie;Charles C.Han
通讯作者：
Charles C.Han
影响因子：
19
作者：
S. Shi;Jianyu Yuan;Guanqun Ding;M. Ford;Kunyuan Lu;Guozheng Shi;Jianxia Sun;X. Ling;Yong Li
通讯作者：
S. Shi;Jianyu Yuan;Guanqun Ding;M. Ford;Kunyuan Lu;Guozheng Shi;Jianxia Sun;X. Ling;Yong Li
影响因子：
4.6
作者：
Hiroki Takeshita;T. Shiomi;K. Takenaka;F. Arai
通讯作者：
Hiroki Takeshita;T. Shiomi;K. Takenaka;F. Arai
影响因子：
15
作者：
Kang, Il;Yun, Hui-Jun;Kim, Yun-Hi
通讯作者：
Kim, Yun-Hi
影响因子：
4.6
作者：
Lu Sun;Yuxiu Liu;Lei Zhu;B. Hsiao;C. Ávila‐Orta
通讯作者：
Lu Sun;Yuxiu Liu;Lei Zhu;B. Hsiao;C. Ávila‐Orta