ʻO kahi laʻana o ka lula
| E23.1501ʻO kahi laʻana o ka lula | |||
| 01 | ʻAilika | 07 | Māhele hoʻokae |
| 02 | Castoroil | 08 | ʻO Polyethylene |
| 03 | Hoʻokaʻawale | 09 | Polypropylene |
| 04 | Hoʻohui | 10 | PVC |
| 05 | Hoʻolaha | 11 | ʻO Polystyrene |
| 06 | Hoʻokaʻawale | . | . |
ʻO ka palaka kahi hui polymer (macromolecules) i hoʻopili ʻia e ka hoʻohui polymerization a i ʻole ka hopena polycondensation me nā monomers e like me nā mea maka. Kona ʻano anti-deformation hiki waena. Aia ia ma waena o ka puluniu a me ke kāpili. Hoʻokomo ʻia ia o ka resin synthetic a me nā mea hoʻopihapiha, plasticizers, a me nā stabilizers. Hoʻokomo ʻia ia o nā mea hoʻohui e like me nā ʻākena, nā lubricants, a me nā pigment.
ʻO ka mea nui o ka ea ke kēpau. Pili ʻo Resin i kahi hui polymer i kāwili ʻole ʻia me nā mea hoʻohui like ʻole. Ua kapa ʻia ka inoa resin no nā lipid i hūnā ʻia e nā mea kanu a me nā holoholona, e like me ka rosin a me ka shellac. ʻO ka helu o ka kēpau ma kahi o 40% a 100% o ka huina kaumaha o ka plastic. Hoʻoholo nui ʻia nā waiwai kumu o nā lula e ke ʻano o ke kēpau, akā he kuleana nui nā mea hoʻohui. Hoʻokomo ʻia kekahi o nā plastics i nā resins synthetic, me ka ʻole a me ka liʻiliʻi o nā mea hoʻohui, e like me plexiglass, polystyrene, etc.
