Wallenberg Wood Science Center

Comparison of synthetic and post-synthetic molecular genetic methods of reducing xylan glucuronidation in hybrid aspen for biorefinery applications

Abstract Background The pattern of xylan backbone substitution by 4- O -methylglucuronic acid (mGlcA) and O -acetyl groups generated during biosynthesis in the Golgi apparatus plays a key role in molecular interactions between secondary cell wall polymers in hardwoods, thus regul...

Sequence‐Controlled Copolymers Through Selective Ring‐Opening Polymerization of Multiunit Macrolactones

ABSTRACT A new strategy for the synthesis of sequence‐controlled polymers (SCP), in which increased ester reactivity by the introduction of neighboring glycolate units within a multiunit macrolactone, was developed. DFT calculations and model reactions show that the proximity of...

Plasticizer compatibility with amorphous (low-ordered) cellulose and dialcohol cellulose

Abstract Biopolymers such as cellulose are promising candidates for replacing fossil-based plastics, but their processing is often limited by their high glass transition temperature ( T g ) and strong intermolecular hydrogen bonding. Plasticizers can improve processability, yet t...

Multiscale transitional flow in anisotropic nanoparticle suspensions revealed by time-resolved X-ray scatter microscopy

Abstract Complex fluids transition from laminar to transitional flow above a critical control parameter, in a similar manner to their Newtonian counterparts. In a continuum mechanics sense, fluid elements follow the ensuing complex trajectories, which gives rise to secondary flow...

Resolving Lateral Heat Transport in GaN‐on‐SiC HEMT Structures via Transient Thermometry

ABSTRACT Understanding lateral heat transport in GaN high‐electron‐mobility transistors (HEMTs) is essential for the thermal management of high‐power and high‐frequency electronics. Here, lateral thermal transport in GaN HEMTs on 4H‐SiC is investigated using electrical thermometr...

A Dynamic Hydrogen‐Bonded Organic Framework With Giant OFF–ON Birefringence

ABSTRACT Birefringence, the optical property enabling materials to split light based on polarization and propagation direction, is crucial for many technological fields, spanning from telecommunications to imaging and photonics. Particularly, controlling the birefringence is vita...

Enhancing Cellulose Reactivity in Textile Waste via Cold-Alkali Swelling

Global fiber demand is rising rapidly, yet less than 1% of discarded textiles are recycled into new materials. Here, cold-alkali swelling followed by acid reprecipitation was investigated as a pretreatment to improve cellulose accessibility and reactivity in textile-waste feedsto...

Deep learning-based surrogate model for generation of wood microstructures

A machine learning-based surrogate model for efficient wood microstructure generation compatible with a physics-based model is developed. The model is based on the U-Net neural network, a variant of convolutional neural network which, due to its architecture, is suitable for imag...

Psychiatric disorders and intellectual disability impact epilepsy care in adolescents: A nationwide registry study

Abstract Objective To investigate the associations of intellectual disability (ID) and psychiatric comorbidities with healthcare utilization and mortality among adolescents with epilepsy. Method A nationwide, population‐based observational study using the data from Swedish nation...