Hydrogen bonding and other non-covalent interactions at the surfaces of cellulose microfibrils

نویسندگان

چکیده

Abstract It is now established that crystalline cellulose held together not just by hydrogen bonding, but also dispersion forces and electrostatic attraction modulated stereoelectronic factors such as the exo-anomeric effect. The surface chains of native microfibrils differ in C6 conformation from therefore form different bonds, both outward inward. Dispersion forces, influenced conformation, operate at microfibril surface. depends on whether interacts with water, surfaces other or non-cellulosic polymers. Cellulose-water binding competes interactions, so diverse interactions are finely balanced free energy, difficult to simulate, dependent local details water structuring about which little known, especially presence dispersed hemicellulosic pectic An example influence hydration aggregation measured neutron scattering, large for primary-wall small hardwood microfibrils. There many consequent uncertainties hydrated microfibrils, how pectins associate why cellulose-xylan interfaces resist hydration. Evidence a range experimental technologies, alongside simulations, will be needed resolve these uncertainties. practical implications wide-ranging, mechanism plant growth mechanical resilience wood development novel, wood-based building materials.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

How Cellulose Stretches: Synergism between Covalent and Hydrogen Bonding

Cellulose is the most familiar and most abundant strong biopolymer, but the reasons for its outstanding mechanical performance are not well understood. Each glucose unit in a cellulose chain is joined to the next by a covalent C-O-C linkage flanked by two hydrogen bonds. This geometry suggests some form of cooperativity between covalent and hydrogen bonding. Using infrared spectroscopy and X-ra...

متن کامل

Non-covalent synthesis of supermicelles with complex architectures using spatially confined hydrogen-bonding interactions

Nature uses orthogonal interactions over different length scales to construct structures with hierarchical levels of order and provides an important source of inspiration for the creation of synthetic functional materials. Here, we report the programmed assembly of monodisperse cylindrical block comicelle building blocks with crystalline cores to create supermicelles using spatially confined hy...

متن کامل

Non-covalent interactions between iodo-perfluorocarbons and hydrogen bond acceptors.

Quantitative studies of the 1 : 1 complexes formed between perfluorohexyl iodide and a variety of hydrogen-bond acceptors have been used to probe the relationship between halogen bonding, hydrogen bonding, desolvation and the electrostatics of non-covalent interactions.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Cellulose

سال: 2022

ISSN: ['1572-882X', '0969-0239']

DOI: https://doi.org/10.1007/s10570-022-04954-3