service

What is the molecular structure of natural rubber in rubber bands?

More than 97% of natural rubber in ordinary rubber bands is isoprene cis-L, 4-addition structure (containing a small amount of isoprene 3, 4-addition structure), its molecular structure is:

The vast majority of the molecular weight of natural rubber is between 30,000 and 10 million, and the molecular weight distribution index is between 2.8-10.

With the increase of molecular weight, the degree of branching increases and the distribution widens.
The low molecular weight part is favorable for processing, and the high molecular weight part is favorable for performance.

Natural rubber is an amorphous, highly elastic substance at room temperature, and can produce crystals at lower temperatures or under strain conditions, so natural rubber is self-reinforcing rubber.

Guangzhou Zoomlea Machinery Equipment Manufacturing Co., Ltd. is specialized in rubber band, hairband, rubber ring, seal ring automatic cutting and bonding integrated equipment production and sales, Tel: +8614757880998.We provide a full range of services from rubber band, hair band, rubber ring, sealing ring processing equipment design, supply, commissioning, maintenance and other aspects, including silicone sealing bonding machine, rubber band adhesive machine, rubber band cutting and bonding machine, hair tie processing equipment, headwear processing equipment.

For more details, please follow the wechat QR code below↓↓↓

Scan and follow wechat