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Controlling mechanical properties of natural rubber composites reinforced with cellulose nanofibers with different fiber morphologies

첫 페이지 보기
  • 발행기관
    강원대학교 산림과학연구소 바로가기
  • 간행물
    강원대학교 산림과학연구소 학술대회 바로가기
  • 통권
    2019 International Symposium of Institute of Forest Science (2019.09)바로가기
  • 페이지
    pp.130-130
  • 저자
    Akio Kumagai, Shinichiro Iwamoto, Yasuko Saitou, Takashi Endo
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A450369

원문정보

초록

영어
Natural rubber (NR) based composites reinforced with cellulose nanofibers (CNFs) were prepared using CNFs with different degrees of fibrillation produced by mechanical fibrillation of softwood bleached kraft pulp, and the reinforcing effect of CNFs on NR was studied. The fiber diameter distributions and fiber morphologies of CNFs were estimated by differential centrifugal sedimentation and characterized. To clarify the reinforcing effect of CNFs, NR based composites were reinforced with low amounts of CNFs (5 phr). Although the low-fibrillated CNFs had a small reinforcing effect on NR, the pulling-out of medium-fibrillated CNFs was suppressed, and mechanical properties were improved as well as a decrease in the elongation at break. Meanwhile, the high-fibrillated CNFs improved the tensile strength without decreasing the elongation, although their initial moduli were lower than those of the medium-fibrillated CNFs. Field-emission scanning electron microscopy imaging of fractured surfaces of NR based composites indicated that the branching fibrillated structure of the medium-fibrillated CNFs affected high enhancement of the initial modulus, and the network formed by the high-fibrillated CNFs were involved in improvement of the tensile strength without compromising viscoelastic properties. It can be concluded that the mechanical properties of the NR reinforced with CNFs were determined by the morphologies of CNFs.

키워드

Cellulose nanofiber Natural rubber Fiber diameter distribution Hybrid composite

저자

  • Akio Kumagai [ Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 3-11-32 Kagamiyama, Higashi-Hiroshima, Hiroshima 737-0046, Japan ] Corresponding Author
  • Shinichiro Iwamoto [ Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 3-11-32 Kagamiyama, Higashi-Hiroshima, Hiroshima 737-0046, Japan ]
  • Yasuko Saitou [ Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 3-11-32 Kagamiyama, Higashi-Hiroshima, Hiroshima 737-0046, Japan ]
  • Takashi Endo [ Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 3-11-32 Kagamiyama, Higashi-Hiroshima, Hiroshima 737-0046, Japan ] 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 2019 International Symposium of Institute of Forest Science

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