Earticle

현재 위치 Home

Preparation of Cellulose Nanocrystals via a Mild Mixed Acid Hydrolysis with High Yield and High Thermal Stability

첫 페이지 보기
  • 발행기관
    강원대학교 산림과학연구소 바로가기
  • 간행물
    강원대학교 산림과학연구소 학술대회 바로가기
  • 통권
    KNU IFS 2018 Annual International Symposium of Institute of Forest Science (2018.09)바로가기
  • 페이지
    pp.110-110
  • 저자
    Zhufan Zou, Xianghao Yang, Hongxiang Xie, Hongyan Lan, Yang Cheng, Jiahui Shen, Youngsoo Bae, Chuanling Si
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A450222

원문정보

초록

영어
Cellulose nanocrystals (CNCs) are mainly produced by traditional mineral acid hydrolysis, such as sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, etc., which usually causes some problems such as corrosion of equipment, inability of acid recovery, large amounts of water usage, and over-degradation of cellulose. In this work, a green and sustainable approach for the preparation of CNCs was developed by using a mixed acid hydrolysis of oxalic acid and sulfuric acid. The acid ratio, reaction temperature, and reaction time were investigated in detail. It was discovered that a high yield up to 85 % was achieved by this mixed acid with a ratio of 5:1:4 for sulfuric acid: oxalic acid: H2O respectively at 95 oC for 2 h. Results showed that the resultant CNCs have a narrow particle size of 416±35 nm (based on dynamic light scattering). TEM characterization showed the CNCs was perfect whisker morphology. Also, the obtained CNCs exhibited superior dispersion stability in water due to the introduction of carboxyl group on the surface of CNCs by oxalate esterification. Thermogravimetric analyses revealed that the resultant CNCs showed a much higher thermal stability (315 °C) than the traditional sulfuric acid hydrolyzed CNCs. In addition, over 90% of oxalic acid could be recovered by a simple recrystallization step. Thus, the present work demonstrated an efficient and green preparation method of CNCs with high yield and high thermal stability.

키워드

Cellulose nanocrystals Mixed acid hydrolysis Oxalic acid Sulfuric aci

저자

  • Zhufan Zou [ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, P.R. China ]
  • Xianghao Yang [ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, P.R. China ]
  • Hongxiang Xie [ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, P.R. China ] Corresponding Author
  • Hongyan Lan [ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, P.R. China ]
  • Yang Cheng [ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, P.R. China ]
  • Jiahui Shen [ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, P.R. China ]
  • Youngsoo Bae [ Department of Forest Biomaterials Engineering, College of Forest & Environment Sciences, Kangwon National University, Chuncheon 24341, Korea ]
  • Chuanling Si [ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, P.R. China ] Corresponding Author

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    강원대학교 산림과학연구소 [Institute of Forest Science Kangwon National University]
  • 설립연도
    1975
  • 분야
    농수해양>임학
  • 소개
    강원대학교부설산림과학연구소(이하 “연구소”라 한다)는 산림에 관한 제반 학술적 연구를 통하여 산림자원의 효용을 밝히고 임업 및 임산업의 발전에 기여함을 목적으로 한다.

간행물

  • 간행물명
    강원대학교 산림과학연구소 학술대회
  • 간기
    부정기
  • 수록기간
    2017~2024
  • 십진분류
    KDC 526 DDC 634

이 권호 내 다른 논문 / 강원대학교 산림과학연구소 학술대회 KNU IFS 2018 Annual International Symposium of Institute of Forest Science

    피인용수 : 0건 (자료제공 : 네이버학술정보)

    함께 이용한 논문 이 논문을 다운로드한 분들이 이용한 다른 논문입니다.

      출처 : 네이버학술정보

        0개의 논문이 장바구니에 담겼습니다.

        페이지 저장
        소속기관 조회
        이용자님의 소속기관(단체)이 서비스에 가입되어 있는지 확인해 보십시오.
        기관회원에 소속되어 있는 이용자는 원문을 무료로 이용할 수 있습니다.