@yogaa_306: adem😇

kucing manis😸
kucing manis😸
Open In TikTok:
Region: ID
Saturday 09 March 2024 02:50:01 GMT
137
26
2
2

Music

Download

Comments

taurusgurl_20
Diajengrtnhkn🦋 :
😇
2024-03-09 02:57:51
0
yogaa_306
kucing manis😸 :
kamu lek aku follow 😇
2024-03-09 15:42:35
0
To see more videos from user @yogaa_306, please go to the Tikwm homepage.

Other Videos

Celluloid, one of the first synthetic plastics, was invented in the 1860s and gained widespread use in the late 19th and early 20th centuries. It is primarily composed of cellulose nitrate, derived from plant fibers, and camphor, an organic compound that acts as a plasticizer. Cellulose nitrate, the main component, is formed by replacing hydroxyl groups in cellulose with nitro groups, giving it flammable properties. The addition of camphor makes celluloid flexible and durable, forming a lightweight and moldable material that can be produced in various colors and transparencies. The unique properties of celluloid made it a versatile material for many applications. It was a cornerstone of early photography and cinema, providing the transparent, durable film used in cameras and projectors. Beyond film, it was used in consumer goods like combs, jewelry, toys, and ping pong balls, prized for its lightweight and rigidity. It also found use in medical and dental items such as prosthetics and surgical instruments. Celluloid could imitate expensive natural materials like ivory and tortoiseshell, making it popular in fashion and household items. However, celluloid’s highly flammable nature, brittleness over time, and environmental concerns eventually limited its use. In cinema, it posed significant fire hazards during storage and projection. Safer materials like acetate, polyester, and ABS plastic have since replaced celluloid in most applications. Despite these limitations, celluloid’s revolutionary role in the development of plastics and its contributions to industries like film and manufacturing mark it as a pivotal material in the history of materials science. #chemistry #chemteacherphil
Celluloid, one of the first synthetic plastics, was invented in the 1860s and gained widespread use in the late 19th and early 20th centuries. It is primarily composed of cellulose nitrate, derived from plant fibers, and camphor, an organic compound that acts as a plasticizer. Cellulose nitrate, the main component, is formed by replacing hydroxyl groups in cellulose with nitro groups, giving it flammable properties. The addition of camphor makes celluloid flexible and durable, forming a lightweight and moldable material that can be produced in various colors and transparencies. The unique properties of celluloid made it a versatile material for many applications. It was a cornerstone of early photography and cinema, providing the transparent, durable film used in cameras and projectors. Beyond film, it was used in consumer goods like combs, jewelry, toys, and ping pong balls, prized for its lightweight and rigidity. It also found use in medical and dental items such as prosthetics and surgical instruments. Celluloid could imitate expensive natural materials like ivory and tortoiseshell, making it popular in fashion and household items. However, celluloid’s highly flammable nature, brittleness over time, and environmental concerns eventually limited its use. In cinema, it posed significant fire hazards during storage and projection. Safer materials like acetate, polyester, and ABS plastic have since replaced celluloid in most applications. Despite these limitations, celluloid’s revolutionary role in the development of plastics and its contributions to industries like film and manufacturing mark it as a pivotal material in the history of materials science. #chemistry #chemteacherphil

About