I kēia lā, hāʻawi wau iā ʻoe i kahi hoʻolauna pōkole i ka mōʻaukala o nā plastics.

ʻO ka plastic synthetic mua loa i ka mōʻaukala kanaka he resin phenolic i hana ʻia e ʻAmelika Baekeland me ka phenol a me formaldehyde i ka makahiki 1909, ʻo ia hoʻi ʻo Baekeland plastic.Hana ʻia nā resins Phenolic e ka hopena condensation o nā phenols a me nā aldehydes, a no nā plastic thermosetting.Hoʻokaʻawale ʻia ke kaʻina hana hoʻomākaukau i ʻelua mau ʻanuʻu: ʻo ka hana mua: polymerize mua i loko o kahi pūhui me kahi degere haʻahaʻa o ka polymerization;ʻO ka lua o ka hana: hoʻohana i ka mālama wela kiʻekiʻe e hoʻohuli iā ia i loko o kahi pūhui polymer me kahi kiʻekiʻe o ka polymerization.
Ma hope o hoʻokahi haneli mau makahiki o ka hoʻomohala ʻana, aia nā huahana plastik i nā wahi āpau a hoʻomau i ka ulu ʻana i kahi wikiwiki weliweli.ʻO ka resin maʻemaʻe ʻaʻole waihoʻoluʻu a ʻākala a keʻokeʻo paha ke nānā aku, no laila ʻaʻohe hiʻohiʻona akaka a nani ka huahana.No laila, ʻo ka hāʻawi ʻana i nā huahana plastik i nā kala ʻālohilohi i lilo i kuleana hiki ʻole ke pale ʻia o ka ʻoihana hana plastics.No ke aha i ulu wikiwiki ai nā plastics i nā makahiki 100 wale nō?ʻO ka mea nui no ka loaʻa iā ia nā pono penei:

1. Hiki ke hana ʻia nā plastics ma ke ʻano nui.(Ma opaʻi palaka)

2. He māmā ka mānoanoa pili o ka plastic a he kiʻekiʻe ka ikaika.

3. Loaʻa i ka plastik ke kūpaʻa corrosion.

4. Loaʻa i ka plastic ka hoʻopulapula maikaʻi a me ka wela wela.

Nui nā ʻano o nā plastics.He aha nā ʻano nui o nā thermoplastics?

1. ʻO ka polyvinyl chloride (PVC) kekahi o nā plastics kumu nui.Ma waena o nā plastik ʻelima kiʻekiʻe o ka honua, ʻo kona hiki ke hana i ka lua wale nō i ka polyethylene.He maikaʻi ka paʻakikī o ka PVC a me ka corrosion, akā ʻaʻohe elasticity, a he mea make kona monomer.

2. ʻO Polyolefin (PO), ka mea maʻamau ka polyethylene (PE) a me ka polypropylene (PP).I waena o lākou, ʻo PE kekahi o nā huahana plastik nui loa.He haʻahaʻa haʻahaʻa haʻahaʻa ko PP, ʻaʻohe mea ʻawaʻawa, ʻaʻala ʻole a maikaʻi ke kūpaʻa wela.Hiki ke hoʻohana ʻia no ka manawa lōʻihi ma kahi mahana o 110 degere Celsius.ʻO kā mākoupuna plastikhana ʻia me ka papa meaʻai PP.

3. ʻO nā resine Styrene, me ka polystyrene (PS), acrylonitrile-butadiene-styrene copolymer (ABS) a me ka polymethyl methacrylate (PMMA).

4. Polyamide, polycarbonate, polyethylene terephthalate, polyoxymethylene (POM).Hiki ke hoʻohana ʻia kēia ʻano plastic ma ke ʻano he mea hoʻolālā, ʻike ʻia hoʻi he mea ʻenekinia.

Ua hoʻopaʻa ʻia ka loaʻa ʻana a me ka hoʻohana ʻana i nā plastics i loko o nā moʻolelo mōʻaukala, a ʻo ia ka lua o ka mea nui i hoʻopilikia i ke kanaka i ke kenekulia 20.He hana mana maoli ka plastik ma ka honua!I kēia lā, hiki iā mākou ke ʻōlelo me ka hoʻonui ʻole: "ʻAʻole hiki ke hoʻokaʻawale ʻia ko mākou ola mai ka plastic"!