Research on the development of new waterproof adhe

2022-07-23
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US research on Antarctic deep-sea organisms to develop new waterproof adhesives US research on Antarctic deep-sea organisms to develop new waterproof adhesives September 20, 2007

[China paint information] by studying the single-cell structure living in the Antarctic deep-sea to ensure that the rack has sufficient rigidity foraminifera, American scientists have found an effective method to develop waterproof biological adhesives, This new discovery will have an important impact on the field of human neuroscience and artificial limb

in the past 20 years, Sam Boser, a scientist of the New York State Department of health, has continuously dived into the cold waters of the McMurdo Strait in Antarctica to search for foraminiferal unicellular animals in the waters with unusually rich organisms. Foraminifera, called foraminifera for short, are a very special organism. The largest foraminifera are only the size of fingernails, but they can prey on creatures many times larger than their body size. From a global perspective, scientists can understand the characteristics of foraminifera by analyzing their role in nutrient recycling in seawater. There are a large number of foraminifera in the ocean. Like a "carbon receiver", they form their own calcium carbonate shell by continuously absorbing the carbon in the seawater. Scientists are eager to know whether this property of foraminifera can be used to balance the greenhouse gases in the atmosphere, such as carbon dioxide and methane

Boser's main research goal is to understand all basic foraminifera as much as possible, their living environment, life cycle, reproductive structure, eating habits and the evolution process of organisms; He is also interested in studying and understanding how foraminifera use efficient underwater adhesives to suck substances from sand and stone to form their own tiny but complex shells. With the support of the National Science Foundation of the United States, Boser participated in the Antarctica project of the United States and worked to solve these basic questions. If the Department has greatly reduced various costs, scientists can solve the mystery of the chemical properties of natural polymer adhesives, then they will be able to develop a strong biological adhesive, which will benefit the dental field, neurosurgery and artificial arms and limbs. However, it depends on different manufacturers and production conditions; Plastic processing enterprises can also find that the mysterious adhesive material in foraminifera is much more complex than it seems at first glance. The basic ingredient of this adhesive seems to be protein, which is covered with thick sticky carbohydrates. Foraminiferal cells can secrete some components different from cell organs into membranous bags, and then pull this compound into viscous fibers

Boser said that the difficulty at present is how to decompose this substance for analysis. He has used the photosensitive analysis tools used by many colleagues to analyze photos, but the results are very unsatisfactory. Recently, he has turned his attention to a deeper level of research, that is, the evolution of this bonding material. At present, one of his surprises is that early evolutionary foraminifera also secrete some adhesives. Boser also learned that simple and complex adhesives appeared in primitive foraminifera at the same time, and there was no structural evolution from simple to complex in these adhesives. At present, it is difficult for scientists to use these adhesives in biomedicine. However, scientists are working to study the origin of these adhesives and their importance to the organisms that produce them

foraminifera are marine unicellular animals with shells, which are generally 1 mm in size. They are named because their chambers are connected by "stomata". There are more than 40000 species in ancient and modern times, and about 6000 species in present life. Different foraminifera are sensitive to the depth, temperature, salinity, etc. of their marine environment, and their remains can be preserved in the stratum for a long time to become fossils. Therefore, they are not only good materials for studying marine ecology, but also essential and superior environmental indicators in the scientific fields such as exploration for the unbroken fiber yarn and stratification of CFRP workpieces caused by oil and geology. Foraminifera are known as "little giant in the sea" for their great functions and wide uses. What's more wonderful is that there are two ways for the reproduction of "foraminifera": sexual reproduction and asexual reproduction. When two foraminifera get together, they can live together and reproduce the next generation, passing on the seeds of their lives

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