Summary
Samenvatting EXAMEN CHEMIE
- Course
- Institution
Samenvatting van 5 pagina's voor het vak Chemie - Theorie aan de HoGent (EXAMEN CHEMIE)
[Show more]
Seller
Follow
Sunny007
Reviews received
Content preview
Bespreek, dmv microscopische en moleculaire structuur, welke rol cellulose speelt in lignocellulosewanneer dit materiaal onderhevig is aan schuifspankrachten. Verklaar.
Microscopisch niveau: de verschillende "lagen" in de celwand & de
oriëntering van de cellulose-(micro)fibrillen.
• Dunne primaire wand
0,2 μm dik0,2 dik
vlechtwerk van ongeordende ketens van cellulosemoleculen ––de fibrillen & lignine
• Dunne secundaire wand Dunne S1:
samengesteld uit 2 CW
samen 0,15 μm dik;
beide celwandenelementen bestaan uit een onder een verschillende hoek geplaatste laag fibrillengeplaatste
fibrillen
• Dikkere secundaire wand S2:
ca 5 μm dik
opgebouwd uit in de vezelrichting lopende fibrillenlopende fibrillen
• Binnenlaag of tertiaire wand Binnenlaag S3:
qua opbouw vergelijkbaar met de wand Swand S11
De vezelholte = het lumen :
transport van water en voedingsstoffen;
het lumen van verschillende cellen staat met elkaar in verbinding via door membranen of “terugslagklepjes”
afgesloten openingen in de wand
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Sunny007. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.72. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
70055 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now