Citation: Shu-ying Shang, Xue-bang Wu, Jia-peng Shui, Zhen-gang Zhu. OBSERVATION OF ENERGY DISSIPATION PEAK IN POLYSTYRENE MELT ABOVE Tg[J]. Chinese Journal of Polymer Science, ;2007, 25(6): 629-633. shu

OBSERVATION OF ENERGY DISSIPATION PEAK IN POLYSTYRENE MELT ABOVE Tg

Received Date: 8 November 2006
Revised Date: 8 March 2007

In this paper two different kinds of dynamic mechanical techniques (inversed torsion pendulum and energy dissipation apparatus) were used to study the dynamic behavior of atactic monodisperse polystyrene above glass transition. The plots of energy dissipation versus temperature were presented for two atactic polystyrene samples. An apparent energy dissipation peak occurred above Tg in each plot measured by the inversed torsion pendulum, and simultaneously the sample was found to flow assuredly at the moment. To exclude the influence of the flow and demonstrate there was a peak indeed above Tg, the energy dissipation apparatus was used, in which the samples were put into a cup. An obvious peak appeared, and it was in agreement with the peak observed by the inversed torsion pendulum. On basis of the results measured by the two kinds of apparatus, a conclusion is drawn that a peak occurrs above Tg, which gives a manifestation for the existence of the liquid-liquid transition.
1. [1]
  Qiangwei Wang , Huijiao Liu , Mengjie Wang , Haojie Zhang , Jianda Xie , Xuanwei Hu , Shiming Zhou , Weitai Wu . Observation of high ionic conductivity of polyelectrolyte microgels in salt-free solutions. Chinese Chemical Letters, 2024, 35(4): 108743-. doi: 10.1016/j.cclet.2023.108743
2. [2]
  Jinhui Xu , Yanting Zhang , Kecheng Wen , Xinyu Wang , Zhiwei Yang , Yuan Huang , Guozhong Zheng , Lupeng Huang , Jing Zhang . Enhanced removal of polystyrene nanoplastics by air flotation modified by dodecyltrimethylammonium chloride: Performance and mechanism. Chinese Chemical Letters, 2025, 36(5): 110240-. doi: 10.1016/j.cclet.2024.110240
3. [3]
  Jinqi Yang , Xiaoxiang Hu , Yuanyuan Zhang , Lingyu Zhao , Chunlin Yue , Yuan Cao , Yangyang Zhang , Zhenwen Zhao . Direct observation of natural products bound to protein based on UHPLC-ESI-MS combined with molecular dynamics simulation. Chinese Chemical Letters, 2025, 36(5): 110128-. doi: 10.1016/j.cclet.2024.110128
4. [4]
  Zhao Li , Huimin Yang , Wenjing Cheng , Lin Tian . Recent progress of in situ/operando characterization techniques for electrocatalytic energy conversion reaction. Chinese Chemical Letters, 2024, 35(9): 109237-. doi: 10.1016/j.cclet.2023.109237
5. [5]
  Er-Meng Wang , Ziyi Wang , Xu Ban , Xiaowei Zhao , Yanli Yin , Zhiyong Jiang . Chemoselective photocatalytic sulfenylamination of alkenes with sulfenamides via energy transfer. Chinese Chemical Letters, 2024, 35(12): 109843-. doi: 10.1016/j.cclet.2024.109843
6. [6]
  Guilong Li , Wenbo Ma , Jialing Zhou , Caiqin Wu , Chenling Yao , Huan Zeng , Jian Wang . A composite hydrogel with porous and homogeneous structure for efficient osmotic energy conversion. Chinese Chemical Letters, 2025, 36(2): 110449-. doi: 10.1016/j.cclet.2024.110449
7. [7]
  Li Li , Xue Ke , Shan Wang , Zhuo Jiang , Yuzheng Guo , Chunguang Kuai . Antioxidative strategies of 2D MXenes in aqueous energy storage system. Chinese Chemical Letters, 2025, 36(5): 110423-. doi: 10.1016/j.cclet.2024.110423
8. [8]
  Zhao-Xia Lian , Xue-Zhi Wang , Chuang-Wei Zhou , Jiayu Li , Ming-De Li , Xiao-Ping Zhou , Dan Li . Producing circularly polarized luminescence by radiative energy transfer from achiral metal-organic cage to chiral organic molecules. Chinese Chemical Letters, 2024, 35(8): 109063-. doi: 10.1016/j.cclet.2023.109063
9. [9]
  Feibin Wei , Yongfang Rao , Yu Huang , Wei Wang , Hui Mei . The new challenges for the development of NH₃-SCR catalysts under new situation of energy transition in power generation industry. Chinese Chemical Letters, 2024, 35(6): 108931-. doi: 10.1016/j.cclet.2023.108931
10. [10]
  Xinyu Ren , Hong Liu , Jingang Wang , Jiayuan Yu . Electrospinning-derived functional carbon-based materials for energy conversion and storage. Chinese Chemical Letters, 2024, 35(6): 109282-. doi: 10.1016/j.cclet.2023.109282
11. [11]
  Chaoqun Ma , Yuebo Wang , Ning Han , Rongzhen Zhang , Hui Liu , Xiaofeng Sun , Lingbao Xing . Carbon dot-based artificial light-harvesting systems with sequential energy transfer and white light emission for photocatalysis. Chinese Chemical Letters, 2024, 35(4): 108632-. doi: 10.1016/j.cclet.2023.108632
12. [12]
  Yanhua Peng , Xin Yu , Ting Wang . Adaptive nanoconfined Fenton-like reactions: Tailoring carbon pathways for sustainable water treatment and energy harvesting. Chinese Chemical Letters, 2024, 35(12): 110198-. doi: 10.1016/j.cclet.2024.110198
13. [13]
  Siwei Wang , Wei-Lei Zhou , Yong Chen . Cucurbituril and cyclodextrin co-confinement-based multilevel assembly for single-molecule phosphorescence resonance energy transfer behavior. Chinese Chemical Letters, 2024, 35(12): 110261-. doi: 10.1016/j.cclet.2024.110261
14. [14]
  Huanyu Liu , Gang Yu , Ruoyao Guo , Hao Qi , Jiayin Zheng , Tong Jin , Zifeng Zhao , Zuqiang Bian , Zhiwei Liu . Direct identification of energy transfer mechanism in Ce^Ⅲ-Mn^Ⅱ system by constructing molecular heteronuclear complexes. Chinese Chemical Letters, 2025, 36(2): 110296-. doi: 10.1016/j.cclet.2024.110296
15. [15]
  Qingyun Hu , Wei Wang , Junyuan Lu , He Zhu , Qi Liu , Yang Ren , Hong Wang , Jian Hui . High-throughput screening of high energy density LiMn_1-xFe_xPO₄ via active learning. Chinese Chemical Letters, 2025, 36(2): 110344-. doi: 10.1016/j.cclet.2024.110344
16. [16]
  Hangwen Zheng , Ziqian Wang , HuiJie Zhang , Jing Lei , Rihui Li , Jian Yang , Haiyan Wang . Synthesis and applications of B, N co-doped carbons for zinc-based energy storage devices. Chinese Chemical Letters, 2025, 36(3): 110245-. doi: 10.1016/j.cclet.2024.110245
17. [17]
  Shuai Qiu , Jia He , Xiao Hu , Hongxia Yan , Zhao Gao , Wei Tian . Cation-π enhanced triplet-to-singlet Förster resonance energy transfer for fluorescence afterglow. Chinese Chemical Letters, 2025, 36(4): 110057-. doi: 10.1016/j.cclet.2024.110057
18. [18]
  Yusong Bi , Rongzhen Zhang , Kaikai Niu , Shengsheng Yu , Hui Liu , Lingbao Xing . Construction of a three-step sequential energy transfer system with selective enhancement of superoxide anion radicals for photocatalysis. Chinese Chemical Letters, 2025, 36(5): 110311-. doi: 10.1016/j.cclet.2024.110311
19. [19]
  Xiaoyao Ma , Jinling Zhang , Ge Fang , He Gao , Jie Gao , Li Fu , Yuanyuan Hou , Gang Bai . Förster resonance energy transfer reveals phillygenin and swertiamarin concurrently target AKT on different binding domains to increase the anti-inflammatory effect. Chinese Chemical Letters, 2024, 35(5): 108823-. doi: 10.1016/j.cclet.2023.108823
20. [20]
  Xiaoming Fu , Haibo Huang , Guogang Tang , Jingmin Zhang , Junyue Sheng , Hua Tang . Recent advances in g-C3N4-based direct Z-scheme photocatalysts for environmental and energy applications. Chinese Journal of Structural Chemistry, 2024, 43(2): 100214-100214. doi: 10.1016/j.cjsc.2024.100214

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(712)
HTML views(0)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return