The combination of plant-based particles and water forms an 'eco' super-glue

February 24, 2020

In a study published in Advanced Materials, researchers at Aalto University, the University of Tokyo, Sichuan University, and the University of British Columbia have demonstrated that plant-derived cellulose nanocrystals (CNCs) can form an adhesive that fully integrates the concepts of sustainability, performance, and cost which are generally extremely challenging to achieve simultaneously.

Unlike Superglue, the new eco glue develops its full strength in a preferred direction, similar to "Peel and Stick" adhesives. When trying to separate the glued components along the principal plane of the bond, the strength is more than 70 times higher when compared to the direction perpendicular to that plane. All of this means that just a single drop of the "eco" glue has enough strength to hold up to 90kg weight, but can still be easily removed by the touch of a finger, as needed. As Dr Blaise Tardy from the Aalto Department of Bioproducts and Biosystems puts it, 'The ability to hold this amount of weight with just a few drops is huge, especially from a natural plant-based solution'.

These kind of properties are useful in protecting fragile components in machines that can undergo sudden physical shock such as high-value components in microelectronics, to increase the reusability of valuable structural and decorative elements, in new solutions for packaging applications, and - in general - for the development of greener adhesive solutions.

Producing a comparable product to a market leader at low cost and with new properties

Furthermore, compared to the current approach of making high-strength glues that can involve complex and expensive routes, the team has demonstrated that their solution is just taking biobased particles sources from plants (with a comparatively negligible cost) and just adding water. Since curing time is associated with evaporation of the water phase (~2 hours, currently), it can be controlled, for instance, with heat.

Aalto Professor Orlando Rojas says, 'Reaching a deep understanding on how the cellulose nanoparticles, mixed with water, to form such an outstanding adhesive is a result of the work between myself, Dr Tardy, Luiz Greca, Professor Hirotaka Ejima, Dr Joseph J. Richardson and Professor Junling Guo and it highlights the fantastic collaboration and integration of knowledge towards the development of an extremely appealing, low-cost and safe application'.

'Good, green packaging with bad glue still renders the packaging bad' - Dr Blaise Tardy

Moreover, the prospects for worldwide utilisation (in a 40B€ industry) is quite attractive given the ever-increasing production of cellulose nanocrystals seen across the globe, as supported by incentives in the framework of the circular bioeconomy.

Dr Tardy adds, 'The truly exciting aspect of this is that although our new adhesive can be sourced directly from residual biomass, such as that from the agro-industry or recycled paper; it outperforms currently available commercial synthetic products by a great many measures'.
-end-


Aalto University

Related Weight Articles from Brightsurf:

How much postmenopause weight gain can be blamed on weight-promoting medications?
Abdominal weight gain, which is common during the postmenopause period, is associated with an array of health problems, including diabetes and heart disease.

Commercial weight management groups could support women to manage their weight after giving birth
Women who were overweight at the start of their pregnancy would welcome support after they have given birth in the form of commercial weight management groups, University of Warwick-led research has found.

Rollercoaster weight changes can repeat with second pregnancy, especially among normal-weight women
Everyone knows that gaining excess weight during one pregnancy is bad, but clinicians rarely consider weight gains and losses from one pregnancy to the next -- especially in normal-weight women.

Early and ongoing experiences of weight stigma linked to self-directed weight shaming
In a new study published today in Obesity Science and Practice, researchers at Penn Medicine and the University of Connecticut Rudd Center for Food Policy and Obesity surveyed more than 18,000 adults enrolled in the commercial weight management program WW International, and found that participants who internalized weight bias the most tended to be younger, female, have a higher body mass index (BMI), and have an earlier onset of their weight struggle

Being teased about weight linked to more weight gain among children, NIH study suggests
Youth who said they were teased or ridiculed about their weight increased their body mass by 33 percent more each year, compared to a similar group who had not been teased, according to researchers at the National Institutes of Health.

Association between weight before pregnancy, weight gain during pregnancy and adverse outcomes for mother, infant
An analysis that combined the results of 25 studies including nearly 197,000 women suggests prepregnancy body mass index (BMI) of the mother was more strongly associated with risk of adverse maternal and infant outcomes than the amount of gestational weight gain.

Study: Faster weight loss no better than slow weight loss for health benefits
Losing weight slowly or quickly won't tip the scale in your favor when it comes to overall health, according to new research.

What your choice of clothing says about your weight
It's commonly said that you can tell a great deal about a person by the clothes they wear.

Stand up -- it could help you lose weight
You might want to read this on your feet. A new study published today in the European Journal of Preventive Cardiology found that standing instead of sitting for six hours a day could prevent weight gain and help people to actually lose weight.

Cash for weight loss
A new study, published in the journal Social Science and Medicine, has shown that selling rewards programmes to participants entering a weight loss programme is a low cost strategy to increase both the magnitude and duration of weight loss.

Read More: Weight News and Weight Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.