Qhov sib txawv tseem ceeb ntawm copolymer thiab homopolymer yog tias muaj ob lub monomers ua cov polymer hauv copolymer whereas, hauv homopolymer, tsuas yog ib qho monomer rov ua dua thiab tsim tag nrho cov polymer.
Polymers yog cov molecules loj, nrog rov ua cov qauv ntawm cov monomers. Cov monomers khi nrog ib leeg los ntawm covalent bonds los tsim cov polymer. Raws li, lawv muaj qhov hnyav molecular thiab muaj ntau dua 10,000 atoms. Tsis tas li ntawd, nyob rau hauv cov txheej txheem synthesis (peb hu ua polymerization), peb tuaj yeem tau txais cov saw hlau ntev dua. Tsis tas li ntawd, cov polymers muaj qhov sib txawv ntawm lub cev thiab tshuaj lom neeg ntau dua li lawv cov monomer. Ntxiv mus, raws li cov monomers uas peb siv nyob rau hauv cov txheej txheem polymerization, copolymer los yog homopolymers yuav tsim.
Copolymer yog dab tsi?
Thaum muaj ob hom monomers koom ua ib lub polymer, peb tuaj yeem hu hom polymer li copolymer. Lub ntsiab lus rau qhov no yog heteropolymer. Yog li ntawd, ob lub monomers tuaj yeem koom nrog hauv ib qho kev zam los ua ib lub polymer.
Daim duab 01: Ntau hom Copolymer (1-homopolymer, 2- alternating copolymer, 3- periodic copolymer, 4- block copolymer thiab 5-grafted copolymer).
Nyob ntawm cov kev sib koom ua ke no, peb tuaj yeem faib cov copolymer raws li hauv qab no.
- Yog tias ob lub monomers npaj ua lwm txoj hauv kev, peb hu nws 'kev hloov pauv copolymer'. (piv txwv li, yog tias ob lub monomers yog A thiab B, lawv yuav npaj zoo li ABABABABAB)
- Yog tias cov monomers npaj nyob rau hauv ib qho kev txiav txim zoo li AABAAABBBBAB, peb hu nws random copolymer.
- Qee zaum, txhua tus monomer tuaj yeem koom nrog tib hom monomers, thiab tom qab ntawd ob lub blocks ntawm homopolymer tuaj yeem koom nrog. Peb hu hom no ua thaiv copolymer (ex: AAAAAAABBBBBBB).
- Tsis tas li ntawd, lub sijhawm copolymers yog cov uas muaj cov chav nyob hauv ib qho kev rov ua dua. Piv txwv li, (A-B-A-B-B-A-A-A-B-B-B)n.
- Tsis tas li ntawd, ib qho khoom cog qoob loo muaj nws cov saw tseem ceeb uas muaj ib hom monomer thaum muaj cov ceg txuas nrog cov saw tseem ceeb no uas muaj lwm cov monomer.
Homopolymer yog dab tsi?
Thaum ib hom monomer dhau los ua cov polymerization los tsim cov macromolecule, peb hu nws ua homopolymer. Hauv lwm lo lus, muaj ib qho rov ua dua. Piv txwv li, polystyrene yog homopolymer qhov chaw rov ua dua yog styrene residues.
Daim duab 02: Homopolymer tsuas muaj ib hom Monomers xwb
Moroever, qee qhov piv txwv rau homopolymers suav nrog nylon 6, nylon 11, polyethylene, polypropylene, PVC lossis polyvinyl chloride, polyacrylonitrile, thiab lwm yam.
Qhov txawv ntawm Copolymer thiab Homopolymer yog dab tsi?
Hauv homopolymer, ib lub monomer rov ua dua thiab tsim tag nrho cov polymer. Hauv kev sib piv, hauv copolymer, muaj ob lub monomers ua cov polymer. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm copolymer thiab homopolymer. Tsis tas li ntawd, lwm qhov sib txawv ntawm copolymer thiab homopolymer yog tias muaj ntau hom copolymer nyob ntawm seb ob lub monomers koom li cas; muaj ntau txoj hauv kev los koom nrog ob lub monomers. Tab sis, hauv homopolymer, hom kev hloov pauv ntawm kev koom nrog tsis tuaj yeem pom.
Cov duab hauv qab no nthuav tawm qhov sib txawv ntawm copolymer thiab homopolymer hauv daim ntawv tabular.
Summary – Copolymer vs Homopolymer
Polymers yog macromolecules tsim los ntawm monomers. Raws li hom monomer uas koom nrog hauv polymerization, muaj ob hom polymers. Lawv yog cov copolymer thiab homopolymers. Qhov sib txawv tseem ceeb ntawm copolymer thiab homopolymer yog tias muaj ob lub monomers ua cov polymer hauv copolymer whereas, hauv homopolymer, ib monomer rov ua dua thiab tsim tag nrho cov polymer.
