Citation: FENG Jinhua, MO Zishen, CHEN Donglin. DENSITY, EQUILIBRIUM HEAT OF FUSION AND EQUILIBRIUM MELTING TEMPERATURE OF NYLON 1010[J]. Chinese Journal of Polymer Science, ;1990, 8(1): 61-68. shu

DENSITY, EQUILIBRIUM HEAT OF FUSION AND EQUILIBRIUM MELTING TEMPERATURE OF NYLON 1010

Received Date: 23 December 1988

The density, equilibrium heat of fusion and equilibrium melting temperature of Nylon 1010 were determined by means of infrared spectrum, differential scanning calorimetry, wide angle X-ray diffraction and density measurement techniques. According to Starkweatber' s method crystalline density ρc and amorphous density ρa were estimated to be 1.098 and 1.003 g/cm3 respectively by extrapolating the straight lines of the IR absorbanee against density to zero intensity. Owing to the less intense in absorbance and less sensitive to the change in crystallinity of the amorphors band the thus obtained Pcwas too low in value.Thereby the value of the ratio Pc/Pa is far less than generally accepted mean value for most crystalline polymers.Accordingly,traditional X-ray diffraction method was used through detemining the crystalline dimension(α=4.9 .B= 5.4, C=27.8 ,α=49°β77.0°, γ=63.5°),and a rather correct value of μc or the crystal density 1.13g/cm3 was obtained.The equilibrium heat of fusion △om was estimated to be 244.0J/g plotting △Hm's of specimens with different crystallinity against their corresponding specific volumes Vspand extrapolating to completely crystalline condition (Vcsp=1/ρc As to the equilibrium melting temperature Tom,because of the easiness of recrystallization of melt crystallized Nylon 1010 specimen,the well-known Hoffman's Tm-Tc method failed in determining this value and an usually rarely used Kamide double extrapolation method was adopted.The so obtained value of Tom 487 seems to be fairly reasonable.
1. [1]
  Rongliang Deng , Yihang Chen , Xiaotong Fan , Guolong Chen , Shuli Wang , Changzhi Yu , Xiao Yang , Tingzhu Wu , Zhong Chen , Yue Lin . Break of thermal equilibrium between optical and acoustic phonon branches of CsPbI₃ under continuous-wave light excitation and cryogenic temperature. Chinese Chemical Letters, 2024, 35(7): 109346-. doi: 10.1016/j.cclet.2023.109346
2. [2]
  Dian-Xue Ma , Yu-Wu Zhong . Achieving highly-efficient room-temperature phosphorescence with a nylon matrix. Chinese Journal of Structural Chemistry, 2024, 43(9): 100391-100391. doi: 10.1016/j.cjsc.2024.100391
3. [3]
  Kun Zhang , Ni Dan , Dan-Dan Ren , Ruo-Yu Zhang , Xiaoyan Lu , Ya-Pan Wu , Li-Lei Zhang , Hong-Ru Fu , Dong-Sheng Li . A small D-A molecule with highly heat-resisting room temperature phosphorescence for white emission and anti-counterfeiting. Chinese Journal of Structural Chemistry, 2024, 43(3): 100244-100244. doi: 10.1016/j.cjsc.2024.100244
4. [4]
  Tingting Liu , Pengfei Sun , Wei Zhao , Yingshuang Li , Lujun Cheng , Jiahai Fan , Xiaohui Bi , Xiaoping Dong . Magnesium doping to improve the light to heat conversion of OMS-2 for formaldehyde oxidation under visible light irradiation. Chinese Chemical Letters, 2024, 35(4): 108813-. doi: 10.1016/j.cclet.2023.108813
5. [5]
  Yunfei Shen , Long Chen . Gradient imprinted Zn metal anodes assist dendrites-free at high current density/capacity. Chinese Journal of Structural Chemistry, 2024, 43(10): 100321-100321. doi: 10.1016/j.cjsc.2024.100321
6. [6]
  Renshu Huang , Jinli Chen , Xingfa Chen , Tianqi Yu , Huyi Yu , Kaien Li , Bin Li , Shibin Yin . Synergized oxygen vacancies with Mn2O3@CeO2 heterojunction as high current density catalysts for Li–O2 batteries. Chinese Journal of Structural Chemistry, 2023, 42(11): 100171-100171. doi: 10.1016/j.cjsc.2023.100171
7. [7]
  Maitri Bhattacharjee , Rekha Boruah Smriti , R. N. Dutta Purkayastha , Waldemar Maniukiewicz , Shubhamoy Chowdhury , Debasish Maiti , Tamanna Akhtar . Synthesis, structural characterization, bio-activity, and density functional theory calculation on Cu(Ⅱ) complexes with hydrazone-based Schiff base ligands. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1409-1422. doi: 10.11862/CJIC.20240007
8. [8]
  Huyi Yu , Renshu Huang , Qian Liu , Xingfa Chen , Tianqi Yu , Haiquan Wang , Xincheng Liang , Shibin Yin . Te-doped Fe3O4 flower enabling low overpotential cycling of Li-CO2 batteries at high current density. Chinese Journal of Structural Chemistry, 2024, 43(3): 100253-100253. doi: 10.1016/j.cjsc.2024.100253
9. [9]
  Na Wang , Wang Luo , Huaiyi Shen , Huakai Li , Zejiang Xu , Zhiyuan Yue , Chao Shi , Hengyun Ye , Leping Miao . Crystal engineering regulation achieving inverse temperature symmetry breaking ferroelasticity in a cationic displacement type hybrid perovskite system. Chinese Chemical Letters, 2024, 35(5): 108696-. doi: 10.1016/j.cclet.2023.108696
10. [10]
  Linjing Li , Wenlai Xu , Jianyong Ning , Yaping Zhong , Chuyue Zhang , Jiane Zuo , Zhicheng Pan . Revealing the intrinsic mechanisms for accelerating nitrogen removal efficiency in the Anammox reactor by adding Fe(II) at low temperature. Chinese Chemical Letters, 2024, 35(8): 109243-. doi: 10.1016/j.cclet.2023.109243
11. [11]
  Shiqi Peng , Yongfang Rao , Tan Li , Yufei Zhang , Jun-ji Cao , Shuncheng Lee , Yu Huang . Regulating the electronic structure of Ir single atoms by ZrO₂ nanoparticles for enhanced catalytic oxidation of formaldehyde at room temperature. Chinese Chemical Letters, 2024, 35(7): 109219-. doi: 10.1016/j.cclet.2023.109219
12. [12]
  Xiao-Tong Sun , Hao-Fei Ni , Yi Zhang , Da-Wei Fu . Hybrid perovskite shows temperature-dependent photoluminescence and dielectric response triggered by halogen substitution. Chinese Journal of Structural Chemistry, 2024, 43(6): 100212-100212. doi: 10.1016/j.cjsc.2024.100212
13. [13]
  Shaojie Ding , Henan Wang , Xiaojing Dai , Yuru Lv , Xinxin Niu , Ruilian Yin , Fangfang Wu , Wenhui Shi , Wenxian Liu , Xiehong Cao . Mn-modulated Co–N–C oxygen electrocatalysts for robust and temperature-adaptative zinc-air batteries. Chinese Journal of Structural Chemistry, 2024, 43(7): 100302-100302. doi: 10.1016/j.cjsc.2024.100302
14. [14]
  Jianmei Guo , Yupeng Zhao , Lei Ma , Yongtao Wang . Ultra-long room temperature phosphorescence, intrinsic mechanisms and application based on host-guest doping systems. Chinese Journal of Structural Chemistry, 2024, 43(9): 100335-100335. doi: 10.1016/j.cjsc.2023.100335
15. [15]
  Huan Hu , Ying Zhang , Shi-Shuang Huang , Zhi-Gang Li , Yungui Liu , Rui Feng , Wei Li . Temperature- and pressure-responsive photoluminescence in a 1D hybrid lead halide. Chinese Journal of Structural Chemistry, 2024, 43(10): 100395-100395. doi: 10.1016/j.cjsc.2024.100395
16. [16]
  Yifan LIU , Zhan ZHANG , Rongmei ZHU , Ziming QIU , Huan PANG . A three-dimensional flower-like Cu-based composite and its low-temperature calcination derivatives for efficient oxygen evolution reaction. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 979-990. doi: 10.11862/CJIC.20240008
17. [17]
  Lijun Yan , Shiqi Chen , Penglu Wang , Xiangyu Liu , Lupeng Han , Tingting Yan , Yuejin Li , Dengsong Zhang . Hydrothermally stable metal oxide-zeolite composite catalysts for low-temperature NO_x reduction with improved N₂ selectivity. Chinese Chemical Letters, 2024, 35(6): 109132-. doi: 10.1016/j.cclet.2023.109132
18. [18]
  Keke Han , Wenjun Rao , Xiuli You , Haina Zhang , Xing Ye , Zhenhong Wei , Hu Cai . Two new high-temperature molecular ferroelectrics [1,5-3.2.2-Hdabcni]X (X = ClO₄⁻, ReO₄⁻). Chinese Chemical Letters, 2024, 35(6): 108809-. doi: 10.1016/j.cclet.2023.108809
19. [19]
  Qian Wang , Ting Gao , Xiwen Lu , Hangchao Wang , Minggui Xu , Longtao Ren , Zheng Chang , Wen Liu . Nanophase separated, grafted alternate copolymer styrene-maleic anhydride as an efficient room temperature solid state lithium ion conductor. Chinese Chemical Letters, 2024, 35(7): 108887-. doi: 10.1016/j.cclet.2023.108887
20. [20]
  Yunfa Dong , Shijie Zhong , Yuhui He , Zhezhi Liu , Shengyu Zhou , Qun Li , Yashuai Pang , Haodong Xie , Yuanpeng Ji , Yuanpeng Liu , Jiecai Han , Weidong He . Modification strategies for non-aqueous, highly proton-conductive benzimidazole-based high-temperature proton exchange membranes. Chinese Chemical Letters, 2024, 35(4): 109261-. doi: 10.1016/j.cclet.2023.109261

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(982)
HTML views(7)

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