The paper describes the synthesis of multifunctional cellulose derivatives (MCDs) containing a fluorescent and a cationic moiety and their application in the functionalization of pulp fibers. The cellulose derivatives, namely N-(3-propanoic acid)- and N-(4-butanoic acid)-1,8-naphthalimide esters of cellulose, differed in the degree of substitution (DS) and by the aliphatic chain connecting naphthalimide photoactive groups to the polymer backbone. The derivatives were decorated with a cationic moiety, namely (3-carboxypropyl)trimethylammonium chloride. The fluorescent pulp fibers were prepared by direct self-assembly of the water-soluble fluorescent MCDs on the fibers in water at room temperature. The results indicated that the adsorption was mainly driven by an ion exchange mechanism. UV–vis and fluorescence spectroscopic studies showed that the adsorption yield of the fluorescent MCDs depended on the length of the aliphatic chain of the photoactive groups. Because of the adsorption, the modified pulp fibers gained fluorescence in the visible part of the spectrum. Under black light illumination, the modified fibers fluoresced, which made them visually distinguishable from the reference fibers. Thus, the fluorescent pulp fibers prepared in a simple way can be potentially used as an authenticity indicator in packaging materials.
Olga Grigoray, Holger Wondraczek, Annett Pfeifer, Pedro Fardim , and Thomas Heinze, ACS Sustainable Chem. Eng., 2017, 5 (2), pp 1794–1803 DOI: 10.1021/acssuschemeng.6b02539
You have remarked very interesting points! ps decent web
site.Expand blog
UID_43242923###
dari tukang jaga warteg jadi sultan gara gara maxwin di agentotoplay
UID_18396685###
test
UID_66514506###
agentotoplay
**mind vault**
mind vault is a premium cognitive support formula created for adults 45+. It’s thoughtfully designed to help maintain clear thinking
UID_57669309###
cekdapa
Win777 Casino has a decent selection of slots and live games. I’ve had some luck there, but remember to play responsibly! Just another option to consider. Check them out at: win777casino
Bong365bong88, eh? I’ve thrown a few bets down there. Good selection of games. Payouts are generally pretty quick, which is always a plus. Check it out if you are looking for some action. bong365bong88
UID_64286524###
cuci
UID_37638084###
cuci
What’s up, internet? Anyone use 9pkrgamedownload before? Curious about the selection and download speeds. Let me know! Link is here: 9pkrgamedownload
Jogabetbr, brazuca que é brazuca gosta de um bom jogo! Esse site tem a nossa cara, com apostas nos esportes que a gente mais curte! Vamo que vamo na jogabetbr!
UID_62467399###
obat kuat
UID_11851941###
obat pelangsing
UID_64596981###
obat kanker herbal
UID_77400878###
toto slot
UID_37537049###
agen toto play login
UID_28904190###
agentotoplay