Abstract Optically transparent wood, combining optical and mechanical performance, is an emerging new material for light‐transmitting structures in buildings with the aim of reducing energy consumption. One main obstacles wood fabrication delignification, where around 30 wt % tissue removed to reduce light absorption refractive index mismatch. This step time consuming not environmentally benign. Moreover, lignin removal weakens structure, limiting large structures. A green industrially...

A centimeter-thick transparent wood structure was realized through interface manipulation.

Non-leaking, green materials with high content of phase change (PCM) can conserve solar energy and contribute to a sustainable society. Here, paraffin was encapsulated by nanocellulose (CNF) through pickering emulsion method, while simultaneously forming composite material. The thermodynamic drive for separation confirmed molecular modeling. Particle formation characterized dynamic light scattering they were processed into stable PCM/CNF composites in the form PCM paper structures favorable...

High Klason lignin content (23 wt%) cellulose nanofibrils (LCNF) were successfully isolated from eucalyptus pulp through catalyzed chemical oxidation, followed by high-pressure homogenization. LCNFs had a diameter of ca. 13 nm according to AFM evaluation. Dense films obtained vacuum filtration (nanopaper) and subjected different drying methods. When under heat mild (93 °C, 95 kPa) higher water contact angle, lower roughness oxygen transmission rate observed, compared those at room...

Soft tissues possess remarkable mechanical strength for their high water content, which is hard to mimic in synthetic materials. Here, we demonstrate how strain-induced stiffening hydrogels plays a major role mimicking the properties of collagenous soft tissues. In particular, nanocellulose reinforced polyvinyl alcohol (PVA) exceptionally content (90-93 wt%) are shown exhibit collagen-like behavior typical High and co-existence both rigid domains gel network main factors responsible...

Globally, uncorrected refractive errors are one of the main causes visual impairment, and contact lenses form an important part modern day eye care culture. Several hydrogels with varying physicochemical properties in use to manufacture soft lenses. Hydrogels generally too reinforcement appropriate materials is desirable achieve high water content without compromising mechanical properties. In this study, we have developed a highly transparent macroporous hydrogel >90%, by combining...

For the successful commercialisation of microfibrillated cellulose (MFC) it is utmost importance to carefully characterise constituent particles. This could for instance lead development MFC grades with size distributions tailored specific applications. Characterization challenging due heterogeneous chemical and structural nature MFC. study describes a fractionation approach that combines two steps physical sieving larger particles final centrifugation step separate out smallest, colloidally...

Abstract This article explores current challenges in the use of automated parallel synthesizers polymeric materials research. Four types polymerizations were investigated: carbodiimide‐mediated polyesterification, diphenol phosgenation, free radical, and reversible addition‐fragmentation chain‐transfer (RAFT). Synthetic condensation polymerization, such as liquid solid dispensing accuracy, dropwise addition, toxic chemical handling, successfully met using synthesizer. Both dosing diacid...

Numerous biomaterials based on extracellular matrix-components have been developed. It was our aim to investigate whether a hyaluronic acid–based hydrogel improves neuronal survival and tissue preservation in organotypic spinal cord slice cultures. Organotypic cultures were cultured for 4 days vitro (div), either (hyaluronic acid–gel group), collagen gel (collagen directly polyethylene terephthalate membrane inserts (control or the presence of soluble acid (soluble group). Cultures...

We present a method for producing cell–scaffold hybrid construct at the bedside. The is composed of plastic-compressed collagen together with poly(ɛ-caprolactone) (PCL)-knitted mesh that yields an integrated, natural–synthetic scaffold. This was evaluated by seeding minced bladder mucosa, followed proliferation in vitro. High mechanical strength combination biological environment suitable tissue growth achieved through creation showed increased tensile (17.9±2.6 MPa) when compared to...

We investigate the layer formation of enzymatic cellulose by airbrush spray coating on silicon oxide surfaces. The structure and morphology films in thickness range between 86 nm 2.1 µm is determined as a function procedures. For each step, buildup, surface topography, crystallinity well nanoscale are probed with atomic force microscopy surface-sensitive X-ray scattering methods. Without intermittent drying, film saturates; linear increase number pulses observed. A closed was always remains...

Abstract A method for determining the correlation between mixing of two reactive polymers and structural mechanical properties formed hydrogels is presented. Rheological measurements show that insufficient gives rise to soft not fully crosslinked while excessive beyond gel point results in weaker due potential breakage their 3D network. Furthermore, swell significantly more cell culture medium than phosphate‐buffered saline, attributed interactions with additional molecules such as proteins....

Many polymers, including polyethylene, feature a relatively low melting point and hence must be cross-linked to make them viable for applications that demand high stiffness creep resistance at elevated temperatures. The resulting thermoset plastics cannot recycled, therefore alternative materials with reconfigurable internal network structure are in demand. Here, we establish such thermoset-like yet recyclable material can realized through the addition of nanocellulose reinforcing agent. A...

Atom transfer radical polymerization (ATRP) has been utilized to synthesize tri- and star-block copolymers of poly(di(ethylene glycol)methyl ether methacrylate) (PDEGMA) quaternized poly(2-(dimethylamino)ethyl (qPDMAEMA). The block copolymers, all with a minimum two cationically charged blocks, were sequentially used for electrostatic macrocrosslinking dilute dispersion anionic TEMPO-oxidized cellulose nanofibrils (CNF, 0.3 wt%), forming free-standing hydrogels. cationic adsorbed...

With the increasing elderly population an increase in number of bony fractures associated to age-related diseases such as osteoporosis also follows. The relatively high stiffness acrylic bone cements used these patients has been suggested give raise a suboptimal load distribution surrounding cement vivo, and hence contribute clinical complications, additional fractures. aim this study was develop low-modulus cement, based on currently used, commercially available poly(methyl methacrylate)...

The use of injectable materials is a simple approach for drug delivery and tissue repair, in, e.g. minimally invasive surgery applications. If these are used past their glass transition temperature have low viscosity, they will be able to flow while delivered in situ . Whether as viscosity carriers or further crosslinked there need better understanding handling properties. In this study, oligo(trimethylene carbonate) (oTMC) oligo[D,L‐lactide‐co‐(ε‐caprolactone)] (oDLLA‐co‐CL) various...

Purpose: To evaluate the long term visual results, effectiveness, and safety of limbal conjunctival autograft transplantation associated with an amniotic membrane (AM) in patients total stem cell deficiency.Methods: A retrospective study involving 22 eyes unilateral deficiency who attended to Oftalmosalud Instituto de Ojos between September 2009 May 2017 were operated cryopreserved AM transplantation.Successful complications assessed at 1 year follow-up last follow up time.Success was...