Citation: GAO Yushu, WANG Jian, SHEN Jiacong. COMPARISON OF GPC AND THERMAL FIELDFLOW FRACTIONATION METHODS FOR LINEAR AND STAR BRANCHED POLYSTYRENE SAMPLES*[J]. Chinese Journal of Polymer Science, ;1985, 3(3): 265-271. shu

COMPARISON OF GPC AND THERMAL FIELDFLOW FRACTIONATION METHODS FOR LINEAR AND STAR BRANCHED POLYSTYRENE SAMPLES*

Received Date: 30 April 1985

The Thermal Field-Flow Fractionation (TFFF) method was used to determine the elution volumeof a series of star branched polystyrene having different number of arms but the same arm molecularweigh and polystyrene standards with narrow distribution whose molecular weight ranged from5.0×104 to 8.6×105. Results were obtained by measuring at two temperature difference (△T=30℃and △T=50℃ in THF. The same star branched samples were measured by means of GPC method.Comparison of Vr-M relationships obtained from TFFF and GPC showed that the displacement of Vr-M curves for star and linear polystyrene is larger than that in GPC.This difference is caused by the entirely different mechanism of separation for these two methods.As the controlling factor is hydrodynamic volume of the polymer chain in solution for GPC,it is the diffusion coefficient of polymer molecules for TFFF.The experimental results indicate that the influence of variance of chain structure on diffusion coefficient is stronger than that on the hydrodynamic volume and that TFFF tech-nique may be used as a method for characterizing branching of polymer molecules.For this purpose a proper theoretical model and more accurate experiments are needed.
1. [1]
  Ming-Zhen Li , Yang Zhang , Kun Li , Ya-Nan Shang , Yi-Zhen Zhang , Yu-Jiao Kan , Zhi-Yang Jiao , Yu-Yuan Han , Xiao-Qiang Cao . In situ regeneration of catalyst for Fenton-like degradation by photogenerated electron transportation: Characterization, performance and mechanism comparison. Chinese Chemical Letters, 2025, 36(1): 109885-. doi: 10.1016/j.cclet.2024.109885
2. [2]
  Xinyu Liu , Jialin Yang , Zonglin He , Jiaoyan Ai , Lina Song , Baohua Liu . Linear polyurethanes with excellent comprehensive properties from poly(ethylene carbonate) diol. Chinese Chemical Letters, 2025, 36(1): 110236-. doi: 10.1016/j.cclet.2024.110236
3. [3]
  Huiju Cao , Lei Shi . sp¹-Hybridized linear and cyclic carbon chain. Chinese Chemical Letters, 2025, 36(4): 110466-. doi: 10.1016/j.cclet.2024.110466
4. [4]
  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
5. [5]
  Chengyao Zhao , Jingyuan Liao , Yuxiang Zhu , Yiying Zhang , Lianjie Zhai , Junrong Huang , Hengzhi You . Polystyrene-supported phosphoric-acid catalyzed atroposelective construction of axially chiral N-aryl benzimidazoles. Chinese Chemical Letters, 2025, 36(6): 110337-. doi: 10.1016/j.cclet.2024.110337
6. [6]
  Xiao Yang , Wenjing Liu , Jiarui Kong , Xiangcheng Shan , Qiupei Lei , Zhipeng Yin , Runzeng Liu , Min Zhang , Qingzhe Zhang , Yongguang Yin , Chuanyong Jing , Yong Cai . Synthesis of amine-functionalized polystyrene resin-based globular adsorbents for efficient and selective removal of As and Sb species. Chinese Chemical Letters, 2025, 36(11): 110856-. doi: 10.1016/j.cclet.2025.110856
7. [7]
  Lihua HUANG , Jian HUA . Denitration performance of HoCeMn/TiO₂ catalysts prepared by co-precipitation and impregnation methods. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 629-645. doi: 10.11862/CJIC.20230315
8. [8]
  Feihu Wu , Gengwen Chen , Kaitao Lai , Shiqing Zhang , Yingchao Liu , Ruijian Luo , Xiaocong Wang , Pinzhi Cao , Yi Ye , Jiarong Lian , Junle Qu , Zhigang Yang , Xiaojun Peng . Non-specific/specific SERS spectra concatenation for precise bacteria classifications with few samples using a residual neural network. Chinese Chemical Letters, 2025, 36(1): 109884-. doi: 10.1016/j.cclet.2024.109884
9. [9]
  Jian Li , Jinjin Chen , Qi-Long Hu , Zhen Wang , Xiao-Feng Xiong . Recent progress of chemical methods for lysine site-selective modification of peptides and proteins. Chinese Chemical Letters, 2025, 36(5): 110126-. doi: 10.1016/j.cclet.2024.110126
10. [10]
  Luyun Zhang , Ding Liu , Huri Piao , Zhenhua Jia , Fen-Er Chen . A modified Bis-OPNN phosphorus ligand for Rh-catalyzed linear-selective hydroformylation of alkenes. Chinese Chemical Letters, 2025, 36(7): 110640-. doi: 10.1016/j.cclet.2024.110640
11. [11]
  Hong-Yu Chu , Guang-Chi Liu , Fu-Xue Wang , Lian-Sheng Cui , Chong-Chen Wang . Microcystis aeruginosa removal over MOFs-based materials and the evaluation methods: State-of-the-art review. Chinese Chemical Letters, 2025, 36(10): 110745-. doi: 10.1016/j.cclet.2024.110745
12. [12]
  Haoran Xu , Jiaqi Fan , Jiwei Liu , Qi Wei , Ruoshui Li , Pengcheng Yuan , Bing Xiao , Ying Piao , Wenjing Sun , Jiajia Xiang , Shiqun Shao , Zhuxian Zhou , Youqing Shen , Nigel K.H. Slater , Jianbin Tang . Tetra-branched ionizable lipids enhance the stability and transfection efficiency of lipid nanoparticles for mRNA delivery. Chinese Chemical Letters, 2025, 36(11): 110833-. doi: 10.1016/j.cclet.2025.110833
13. [13]
  Juan Guo , Mingyuan Fang , Qingsong Liu , Xiao Ren , Yongqiang Qiao , Mingju Chao , Erjun Liang , Qilong Gao . Zero thermal expansion in Cs₂W₃O₁₀. Chinese Chemical Letters, 2024, 35(7): 108957-. doi: 10.1016/j.cclet.2023.108957
14. [14]
  Shuangying Li , Qingxiang Zhou , Zhi Li , Menghua Liu , Yanhui Li . Sensitive measurement of silver ions in environmental water samples integrating magnetic ion-imprinted solid phase extraction and carbon dot fluorescent sensor. Chinese Chemical Letters, 2024, 35(5): 108693-. doi: 10.1016/j.cclet.2023.108693
15. [15]
  Zixuan Zhu , Xianjin Shi , Yongfang Rao , Yu Huang . Recent progress of MgO-based materials in CO₂ adsorption and conversion: Modification methods, reaction condition, and CO₂ hydrogenation. Chinese Chemical Letters, 2024, 35(5): 108954-. doi: 10.1016/j.cclet.2023.108954
16. [16]
  Zhili Li , Qijun Wo , Dongdong Huang , Dezhong Zhou , Lei Guo , Yeqing Mao . Improving gene transfection efficiency of highly branched poly(β-amino ester)s through the in-situ conversion of inactive terminal groups. Chinese Chemical Letters, 2024, 35(8): 109737-. doi: 10.1016/j.cclet.2024.109737
17. [17]
  Feng-Qing Huang , Yu Wang , Ji-Wen Wang , Dai Yang , Shi-Lei Wang , Yuan-Ming Fan , Raphael N. Alolga , Lian-Wen Qi . Chemical isotope labeling-assisted liquid chromatography-mass spectrometry enables sensitive and accurate determination of dipeptides and tripeptides in complex biological samples. Chinese Chemical Letters, 2024, 35(11): 109670-. doi: 10.1016/j.cclet.2024.109670
18. [18]
  Miao-Miao Chen , Min-Ling Zhang , Xiao Song , Jun Jiang , Xiaoqian Tang , Qi Zhang , Xiuhua Zhang , Peiwu Li . Smartphone-assisted electrochemiluminescence imaging test strips towards dual-signal visualized and sensitive monitoring of aflatoxin B1 in corn samples. Chinese Chemical Letters, 2025, 36(1): 109785-. doi: 10.1016/j.cclet.2024.109785
19. [19]
  Yan-Cui Wen , Jia-Cheng Hou , Qian Zhou , Sheng-Hua Wang , Jun Jiang , Zi Yang , Hai-Tao Zhu , Zu-Li Wang , Wei-Min He . Linear paired electrolysis enables redox-neutral benzylation of N-heteroarenes with benzyl halides using ion resin as the recyclable electrolyte. Chinese Chemical Letters, 2025, 36(12): 111795-. doi: 10.1016/j.cclet.2025.111795
20. [20]
  Fei Yin , Erli Yang , Xue Ge , Qian Sun , Fan Mo , Guoqiu Wu , Yanfei Shen . Coupling WO₃₋_x dots-encapsulated metal-organic frameworks and template-free branched polymerization for dual signal-amplified electrochemiluminescence biosensing. Chinese Chemical Letters, 2024, 35(4): 108753-. doi: 10.1016/j.cclet.2023.108753

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(1108)
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