Yang Yan-gong

Systems Engineering Society of China

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Jia Zhao

Southwest University

Rimin Cong

Beijing Institute of Technology

Juncheng Liu

Tianjin Polytechnic University

Rui Ding

Chongqing Jiaotong University

Wei Muheng

Systems Engineering Society of China

Jia Zhao

Jiaxing University

Yu Zhang

University of Chinese Academy of Sciences

Yun-jun Luo

Beijing Institute of Technology

Siyi Yang

Chongqing University

Zhenyu Zhong

Southwest University

Cooperative Institutions

Shandong University of Technology

Beijing Institute of Technology

Systems Engineering Society of China

Chinese Academy of Sciences

Tongji University

Southwest University

Tianjin University

University of Chinese Academy of Sciences

Harbin Institute of Technology

Northwestern Polytechnical University

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Process and Effect of Modification on Polyacrylonitrile Fiber by Protein Surface Grafting

Synthetic Fiber in China (2006)

Yang Yan-gong

The basic process and effect of modification of polyacrylonitrile(PAN) fiber by protein surface grafting was studied in this paper. With simple procedures of surface hydrolysis, acidchloride reaction and grafting, the soybean protein could be grafted onto the PAN fiber which endowed the fiber with protein surface, and protein-modified PAN fiber was obtained. SEM photographs showed that after the protein has been grafted, the cracks and pores of the surface of the PAN fiber were filled with protein which gave the fiber new surface and structure. Thus the surface property of PAN fiber changed and the protein-modified function was obtained.

Polyacrylonitrile

Surface Modification

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Effect of Wheat Flour on the Viscosity of Urea-formaldehyde Adhesive

International Journal of Adhesion and Adhesives (2012)

Rui Ding Changhong Su Yang Yan-gong Chengfeng Li Juncheng Liu

GLUE

Urea-formaldehyde

10.1016/j.ijadhadh.2012.08.003

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Study on Flame-retardant Modification of Polyacrylonitrile by Layered Double Hydroxide

Synthetic Fiber in China (2009)

Yang Yan-gong

Polyacrylonitrile (PAN) was made by in situ polymerization between the layer of layered double hydroxide(LDH) pillared by using sodium dodecyl sulfate(SDS). The structure was characterized by Fourier transformed infrared spectroscopy (FT-IR) and X-ray diffractometry (XRD). The flame retardant property was investigated. The results showed that the interlay spacing of LDH had been expanded, which was attributed to the fact that PAN has been intercalated into the layer by in situ polymerization. The LOI of the blend was enhanced from 18.1 % to 25.5 % and the TGA curve moved to higher temperature. The results revealed that the flame retardant property has been improved.

Polyacrylonitrile

Sodium hydroxide

In situ polymerization

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Structure and Property Blending of Polyacrylonitrile and Dimethyl Formamide Intercalated Kaolinite

Gaofenzi cailiao kexue yu gongcheng (2008)

Yang Yan-gong

Dimethyl formamide intercalated Kaolinite(DMF-Kaolinite) was blended with polyacrylonitrile-dimethyl formamide(PAN-DMF) aqueous solution.The structure of the blend was characterized by Fourier transformed infrared spectroscopy(FT-IR) and X-ray diffractometry(XRD).Both the flow property and flame retardant property were investigated.IR and X-ray diffraction indicate that the interlayer spacing of DMF has been expanded,which is attributed to the fact that PAN has been intercalated into the layer of the DMF.The LOI of the blend is enhanced from 18% to 22%,which reveals that the flame retardant property has been improved.In addition,the flow property has not changed much.

Polyacrylonitrile

Dimethyl formamide

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Study on In-situ Polymerization of Polyacrylonitrile/Montmorillonite

Guisuanyan tongbao (2009)

Yang Yan-gong

Organized montmorillonite(O-MMT)was prepared using cetyl trimethyl ammonium bromide(CTAB).With ammonium persulfate as the initiator,Polyacrylonitrile(PAN)was made by in situ polymerization between the layer of O-MMT.The structure of PAN/MMT was characterized by Fourier transformed infrared spectroscopy(FT-IR)and X-ray diffractometry(XRD).Both the flame retardant property and heat resistanct were investigated.FT-IR and XRD indicated that the interlay spacing of MMT has been expanded,which was attributed to the fact that PAN has been intercalated into the layer by in situ polymerization.The LOI of the blend was enhanced from 18% to 22%,which revealed that the flame retardant property has been improved.In addition,the heat resistanct has been improved.

Polyacrylonitrile

Ammonium persulfate

Ammonium bromide

In situ polymerization

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Dissolution Technology and Conditions of High Molecular PAN Polymer

Yang Yan-gong

Dissolution experiments by different methods are made.The results sh ow that method Ⅱcan remarkbly shorten dissolution time,stirring can promote thi s progress and all the dissolution temperature,time and concentration have impac t on it.

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Pre‐Oxidized Acrylic Fiber Reinforced Ferric Sulfophenyl Phosphate‐Doped Polybenzimidazole‐Based High‐Temperature Proton Exchange Membrane

Macromolecular Materials and Engineering (2017)

Peng Sun Zhongfang Li Lei Jin Yang Yan-gong Suwen Wang

Pre‐oxidized acrylic fiber (POAF) and ferric sulfophenyl phosphate (FeSPP) are incorporated into polybenzimidazole (PBI) membrane for the first time to prepare high‐temperature proton exchange membranes (PEMs). The strong hydrogen bonds formed between PBI/POAF and FeSPP lead to good dispersion of POAF and FeSPP, facilitate the construction of proton channels, and enhance the dimensional and mechanical stability of the membranes. PBI/FeSPP (30 wt%) shows good proton conductivity (5.43 × 10 −2 and 4.13 × 10 −2 S cm −1 at 180 °C at 50% and 0 relative humidity (RH), respectively) and improved dimensional and mechanical stability compared with pristine PBI. By incorporating 5 wt% POAF into PBI/FeSPP (30 wt%), the swelling ratios are halved and the mechanical strength is enhanced by almost 30% while the proton conductivity is slightly affected (3.84 × 10 −2 and 2.97 × 10 −2 S cm −1 at 180 °C at 50% and 0 RH for PBI/FeSPP (30 wt%)/POAF (5 wt%), respectively). This work offers a new route in the preparation of high‐temperature PEMs with enhanced properties. image

10.1002/mame.201600468

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Facile synthesis of jagged Au/Ir nanochains with superior electrocatalytic activity for oxygen evolution reaction

Applied Surface Science (2018)

Zeng-Bo Ke Lejing Li Qiurong Jia Yang Yan-gong Hongwei Cui

Oxygen evolution

10.1016/j.apsusc.2018.08.198

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Study on in Situ Polymerization of Polyacrylonitrile/layered Double Hydroxide(PAN/LDH)

Guisuanyan tongbao (2009)

Yang Yan-gong

Using in situ polymerization,the monomer acrylonitrile(AN)was intercalated and polymerized with benzoyl peroxide(BPO)as the initiator between the layer of layered double hydroxide(LDH).The structure of Polyacrylonitrile/layered double hydroxide(PAN/LDH)was characterized by Fourier transformed infrared spectroscopy(FT-IR),scanning electron microscopy(SEM)and X-ray powder diffraction(XRD).Both the flame retardant property and heat resistant were investigated.The results showed that PAN has been prepared between the layer of LDH by in situ polymerization and the interlay spacing of LDH has been expanded.The LOI of the blend was enhanced from 18% to 21%,which revealed that the flame retardant property has been improved.In addition,the heat resistant has been improved.

Polyacrylonitrile

In situ polymerization

Layered double hydroxides

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Preparation of flame-retardant polyacrylonitrile fiber

Hecheng Xianwei Gongye (2012)

Yang Yan-gong Jia Zhao Rimin Cong Ma Airong

Polyacrylonitrile

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