Morphological tus cwj pwm ntawm cov paj rwb foberober

Kev soj ntsuam meticcic qhia tias cov paj rwb fibers tau pluav thiab sib ntswg nyob rau hauv txoj kev taw qhia ntev. Lub xaus xaus yog nyias, thiab ib qho kawg ntawm lub cottonseed tau tuab thiab qhib. Qhov hla hla ntawm paj rwb fibers muaj ntau cov txheej txheem zoo, suav nrog thawj txheej, txheej txheej theem thiab hauv kab nruab nrab.

 

_ Cov txheej txheej thawj yog txheej txheej sab nraud, piv txwv li thawj feem ntawm fibroblasts. Cov tawv nqaij sab nraud ntawm cov txheej txheej ntawm thawj yog txheej ntawm waxy thiab pectin nrog cov wrinkles sib sib zog nqus. Thawj txheej txheej yog heev nyias nrog cov ntsiab lus cellulose me me. Cellulose muaj tus qauv helter network nyob rau hauv thawj txheej.

 

{{0 _ Nyob rau hauv thawj txheej ntawm theem nrab cov paj rwb fibers yog ib txheej ntawm cov hlwb, uas tau ntim kom zoo los ntawm microfibrils. Lub microfibrils tau muab cov kab sib npaug nrog cov ncej roj av, thiab lub kaum sab xis ua yog nruab nrab ntawm 25 thiab 30 degrees. Hauv cov txheej no, muaj yuav luag tsis muaj cov kab nrib pleb thiab qhov. Cov txheej theem nrab yog tsim los ntawm kev tso nyiaj ntawm cov paj rwb fibers thaum lub sijhawm ua kom tuab, yuav luag txhua tus uas yog cellulose. Vim tias qhov kub niaj hnub txawv, feem ntau cov paj rwb fibers tso nyiaj ib txheej ntawm ib hnub ntawm lub hnub, yog li lawv tuaj yeem tsim cov paj rwb fibers'daily rings. Daim ntawv tso tawm ntawm cellulose hauv theem theem nrab tsis yog yam tsis zoo, tab sis nws tau muab kauv rau cov kab mob fiber ntau, uas yog vim li cas yog vim li cas cov paj rwb muaj ntuj curvature muaj ntuj curvature. Kev loj hlob ntawm theem nrab ntawm kev loj hlob ntawm cov kev loj hlob ntawm cov kev mob thiab kev loj hlob ntawm paj rwb fibers, uas tuaj yeem txiav txim siab cov khoom loj ntawm cov paj rwb fibers.

 

{{0 {0}} Tom qab kev loj hlob ntawm cov paj rwb fibers nyob rau hauv nruab nrab ceases, qhov chaw sab laug qab hauv phab ntsa yog hu ua lub cev nruab nrab. Lub puag ncig ntawm thawj lub hlwb hauv nruab nrab ntawm cov paj rwb fibers ntawm tib ntau yam yog muaj feem sib npaug. Thaum lub tsev theem nrab phab ntsa yog tuab, nruab nrab ntawm thaj chaw nruab nrab yog me; Thaum lub phab ntsa thib ob yog nyias, qhov nruab nrab thaj av yog loj. Thaum cov paj rwb boll ribens thiab faib, cov ntoo khaub lig ntawm cov paj rwb fiber ntau yog puag ncig, thiab nruab nrab kab noj hniav yog kuj puag ncig. Qhov hla hla ntawm nruab nrab kab noj hniav yog sib npaug rau 1\/2 lossis 1\/3 ntawm ntu hla ntawm cov fiber. Thaum cov paj rwb boll spits ib txwm muaj, kev sib tw ntawm cov ris tsho paj rwb yog lub duav-puab lub duav, thiab cov ntoo khaublig ntawm nruab nrab yog pluav. Qhov hla ntawm cov flattened nruab nrab ntawm cov kab noj hniav tsuas yog kwv yees li 10% ntawm tag nrho cov ntaub.