한빛사 논문
Clemson University
Abstract
Hansol Doha, Min Hyeock Leeb,*, William Scott Whitesidea,*
a Department of Food, Nutrition, and Packaging Sciences, Clemson University, 226 Poole Agricultural Center, Clemson, South Carolina, USA
b Research Group of Food Processing, Korea Food Research Institute, Wanju-gun, Jeollabuk-do, 55365, Republic of Korea
*Corresponding author : Hyeock Lee, William Scott Whiteside
Abstract
Cellulose nanocrystals (CNCs) were successfully isolated from marine biomass of brown, red, and green seaweeds by a four step process of de-polymerization, bleaching, acid hydrolysis, and mechanical dispersion. Chemical composition, yield, and density were determined for each seaweed group and compared to other cellulose sources. Morphological analysis was performed by transmission electronic microscopy (TEM) and showed that CNCs from seaweed showed rod shape particles 21 – 248 nm length and 4.8 – 41 nm width. The obtained aspect ratio was varied from 2.5 to 15. Fourier transform infrared spectroscopy (FTIR) analysis was performed to investigate chemical structure of CNCs from seaweeds, which revealed obtained crystalline cellulosic from the extraction process. X-ray diffraction (XRD) data showed the main crystalline structure of CNCs was cellulose I in all cases. The crystalline index increased about 21.5% going from cellulose to CNCs. The thermal properties of untreated seaweeds, extracted cellulose, and CNCs were compared by thermogravimetric analysis (TGA). The onset thermal decomposition (Ton) increased in all cases and weight loss changes significantly decreased during the extraction process except Sargassum fluitans, indicating the thermal stability of CNCs.
Keywords : Cellulose nanocrystals; Marine biomass; Seaweeds; Brown seaweeds; Red seaweeds; Green seaweeds
논문정보
관련 링크
연구자 키워드
연구자 ID
관련분야 연구자보기
소속기관 논문보기
관련분야 논문보기
해당논문 저자보기