Poly(ε-caprolactone) has a melting point of 59-64°C and a glass transition temperature of -60°C. It is a low molecular weight, colorless crystalline solid with a waxy texture. The introduction of ester groups -coo- in the molecular structure makes it easily biodegradable by microorganisms ...
Polyester is a specific type of polymer used mainly in fabrics and textiles, offering durability and chemical resistance, while polymers are large molecules comprising many repeated subunits, utilized across diverse industries.
There are many types of clothes in a clothing store. Some are made of cotton, others are made of wool, polyester, or silk. Each material has its own characteristics. Cotton clothes are usually soft and comfortable. They are suitable for hot weather. Wool clothes are warm and cozy. They ...
From a structural perspective, polyester contains an ester functional group in its main chain, which provides it with specific characteristics suitable for fabric creation. Polyethylene is composed of simpler structures, making it versatile for various molding processes and applications. 18 When considering...
What are the characteristics of the ideal endovascular graft for abdominal aortic aneurysm exclusion - Allen, White, et al. - 1997 () Citation Context ...outstanding encapsulation of the wall of the device. The AneuRx device is made of a thin wall woven polyester graft externally supported by...
A:Arethese___madeofwool? B:No,theyaremadeofpolyester. A:Ilikethis___.It’smadeofsilk. B:Metoo.Silk___arecomfortabletowear. 五、阅读理解练习 Therearemanytypesofclothesinaclothingstore.Somearemadeofcotton,othersaremadeofwool,polyester,orsilk.Eachmaterialhasitsowncharacteristics.Cottonclothesareusuall...
In the final stage, the continuous filament yarns are crimped to produce staple fiber, treated with a finishing agent, and then cut to the desired length to create short-cut fibers. The untwisted continuous filament yarns can now also be twisted to enhance their fit-for-use characteristics. ...
Polyester:Polyester is a fabric most people are familiar with, due to its common use in clothing. Polyester is a synthetic material and a form of plastic, making it generally inexpensive and extremely durable. It is also usually moisture-wicking, which can be a pro to hot sleepers. ...
After heat treatment, ES fiber is bonded to each other to form a non-woven fabric molding without adhesive, which has environmental characteristics. Type distinction Depending on the raw materials, ES fibers on the market are mainly divided into PE/PP and PE/PET. The ES fiber of PE/PP comp...
polyester:名词,意为“涤纶”。shirt:名词,意为“衬衫”。trousers:名词,意为“裤子”。二、句型知识点Whatarethese/thoseclothesmadeof?:这是一个询问衣服材质的句型。Theyaremadeof…:这是一个描述衣服材质的句型。三、语法知识点bemadeof:这是一个固定短语,意为“由…制成”。四、功能知识点询问衣服材质的...