@article{da12f9925d9f4a5186fb977c0cfff1b7,
title = "Dehydration-induced physical strains of cellulose microfibrils in plant cell walls",
abstract = "The effect of dehydration of plant cell walls on the physical status of cellulose microfibrils (CMFs) interspersed in pectin matrices was studied. Vibrational sum frequency generation (SFG) spectroscopy analysis of cellulose revealed reversible changes in spectral features upon dehydration and rehydration of onion epidermal walls used as a model primary cell wall (PCW). Combined with microscopic imaging and indentation modulus data, such changes could be attributed to local strains in CMFs due to the collapse of the pectin matrix upon dehydration. X-ray diffraction (XRD) showed that the (200) spacing of cellulose in dried PCWs is larger than that of cellulose Iβ obtained from tunicates. Thus, the modulus of CMFs in PCWs would be lower than those of highly-crystalline cellulose Iβ and inhomogeneous local bending or strain of CMFs could occur readily during the physical collapse of pectin matrix due to dehydration.",
author = "Shixin Huang and Mohamadamin Makarem and Kiemle, {Sarah N.} and Yunzhen Zheng and Xin He and Dan Ye and Gomez, {Esther W.} and Gomez, {Enrique D.} and Cosgrove, {Daniel J.} and Kim, {Seong H.}",
note = "Funding Information: This work was supported by The Center for Lignocellulose Structure and Formation, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award Number DE-SC0001090. The elastic modulus analysis with AFM was carried out with the support from National Science Foundation (Grant No. CMMI-1435766). We acknowledge Dr. Kabindra Kafle and Dr. Christopher M. Lee for the X-ray diffraction data of hardwood and cotton, respectively. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. Funding Information: This work was supported by The Center for Lignocellulose Structure and Formation, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award Number DE-SC0001090 . The elastic modulus analysis with AFM was carried out with the support from National Science Foundation (Grant No. CMMI-1435766 ). We acknowledge Dr. Kabindra Kafle and Dr. Christopher M. Lee for the X-ray diffraction data of hardwood and cotton, respectively. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",
year = "2018",
month = oct,
day = "1",
doi = "10.1016/j.carbpol.2018.05.091",
language = "English (US)",
volume = "197",
pages = "337--348",
journal = "Carbohydrate Polymers",
issn = "0144-8617",
publisher = "Elsevier Limited",
}