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Catalytic Synthesis...
Catalytic Synthesis of Bulk Hydrophilic Acetaldehyde-Modified Polyamide 46
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- Barghi, Hamidreza, 1970 (författare)
- Högskolan i Borås,Institutionen Ingenjörshögskolan,Biotechnology
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- Skrifvars, Mikael (författare)
- Högskolan i Borås,Institutionen Ingenjörshögskolan,Biotechnology
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Taherzadeh Esfahani, Mohammad, 1965 (författare)
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- Taherzadeh, Mohammad J. (författare)
- Högskolan i Borås,Institutionen Ingenjörshögskolan,Biotechnology
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(creator_code:org_t)
- Bentham Science Publishers Ltd. 2014
- 2014
- Engelska.
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Ingår i: Current Organic Synthesis. - : Bentham Science Publishers Ltd.. - 1570-1794 .- 1875-6271. ; 11:2, s. 288-294
- Relaterad länk:
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http://dx.doi.org/10...
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http://benthamscienc...
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https://doi.org/10.2...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Hydrophilization of Polyamide 46 (PA46) via modification with acetaldehyde in continuous phase was studied. The chemical modification of PA 46 with acetaldehyde resulted in a water-swollen polymer with hydrophilic property. The polyamide 46 undergoes a nucleophilic addition with acetaldehyde in the presence of aluminum chloride as a catalyst. The extent of bulk hydroxyethylation using AlCl3 resulted in 95.65% modification counted as total N-hydroxyethylated polyamide 46. The modification resulted in improved hydrophilic properties, and a maximum surface free energy of 44.6 mJ/m2 was achieved after 3 h reaction, whereas the unmodified PA46 had a surface free energy of 11.2 mJ/m2. In addition, thermal properties of the polymers were studied using differential scanning calorimetry and thermogravimetric analyses. The functionalization leads to decrease in the crystallization energy from 88 J/g to 51 J/g, while the melting energy is changed from 110 J/g to 53 J/g. Furthermore, the thermal stability of the PA46 to pyrolysis was diminished after hydroxylation.
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology (hsv//eng)
Nyckelord
- Lewis acid
- synthesis
- Hydroxylation
- polyamides
- nucleophilic substitute reaction
- Resursåtervinning
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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